CAR-SHARING SYSTEM, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING PROGRAM

Abstract

Car-sharing system relating to a car-sharing service in which a multitude of vehicles, including at least one privately owned vehicle and one company-owned vehicle, are shared among a multitude of users for use, wherein the car-sharing service is operated by a company that is distinct from a company as the owner of the company-owned vehicles, and wherein the car-sharing system comprises: a first memory configured to store vehicle scheduling information about corresponding usage schedules of the multitude of vehicles; a second memory configured to store parking station scheduling information about corresponding usage schedules of a multitude of parking stations pre-arranged for parking the vehicles;a communication unit configured to receive from a user, via a user terminal device, a usage reservation for a vehicle from among the multitude of vehicles available at a parking station in the vicinity of a user's departure point during a period requested by the user, and for a parking station from among the multitude of parking stations located in the vicinity of a user's destination where the vehicle can be returned at a time requested by the user, based on the vehicle planning information and the parking station planning information; a reservation processor configured to register the usage reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory;a key information delivery unit configured to deliver key information on the use of the vehicle in accordance with the usage reservation registered in the vehicle planning information to a user's mobile device corresponding to the usage reservation; a determination unit configured to determine, based on preset planning information, that a user of a vehicle or a person associated with the owner requires a replacement vehicle when the vehicle is subject to the usage reservation;wherein the reservation processor is configured to make a usage reservation with reference to a period registered in the vehicle scheduling information for the owner of the vehicle or the person associated with the owner to use the vehicle, for a replacement vehicle different from the vehicle among the multitude of vehicles available during the period, and for a predetermined parking station among the multitude of parking stations to which the replacement vehicle can be returned within the period;and to register the usage reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory, wherein the key information delivery unit is configured to deliver key information for the use of the replacement vehicle to a mobile device of the owner of the vehicle or of the person associated with the owner.

Description

CROSS REFERENCE TO RELATED APPLICATIONThis application is based on and claims the benefit of Japanese Patent Application No. 2018-078717, filed Apr. 16, 2018, the entire contents of which are incorporated herein by reference.Field of InterestThe present disclosure relates to a car sharing system and the like.BackgroundTechnologies related to B2C ("Business to customer") type car sharing services (hereinafter referred to as "B2C car sharing") are known that allow a user to use a mobile terminal to lock and unlock doors of a vehicle to use the vehicle (see, for example, Japanese Unexamined Patent Application Publication JP 2015-69 584 A).For example, Japanese Unexamined Patent Application Publication JP 2015-69 584 A discloses a technology related to a B2B car sharing that allows a user to return a vehicle at a different station from the station corresponding to the departure location, that is, allows one-way use for a simple travel route.However, since it is often the case in the case of B2C car sharing that stations are located at locations where the demand is expected to some extent, there is a possibility that a user of the service needs to search a station distant from the departure location such as the user's home to use the vehicle.In contrast, in the case of a C2C ("Consumer to Consumer") type car sharing service (hereinafter referred to as "C2C car sharing") in which privately owned vehicles and / or company owned vehicles are shared to be used, when a large number of privately owned vehicles and company owned vehicles are registered, there is a higher possibility that the user of the service may borrow a vehicle from a supplier in the vicinity of the departure place such as the home of the user.However, in the case of C2C sharing, it is normally necessary for the user to return the lent vehicle to the original location (home location) (for example, a parking space near the user's home). Therefore, in the case of C2C car sharing, there is a possibility that the user does not enjoy using a simple travel route to return the vehicle at a different location from the departure location.As such, B2B car sharing and C2C car sharing have corresponding advantages and disadvantages, and thus there is room for improvement in convenience for users in car sharing services.Then, in view of the above problems, an object of the present disclosure is to provide a car sharing system and the like capable of further improving convenience for users in the car sharing service.US 2013 / 0 321 178 A1 discloses techniques related to rental of vehicles that may belong to different owners. Each owner may have their own rental criteria for a particular vehicle that potential owners must meet to be able to rent the vehicle. The vehicles may be classified as being leased based on distance to the rentaler, price, and other factors. Messages and alerts may be exchanged between a server and an owner, a rental party, and / or a vehicle computer. Location information about vehicles that can be associated with particular drivers is collected. Historical information and other data may be used to predict driver goals.US 2015 / 0 206 206 A1 discloses the sharing of vehicles by a plurality of retailers, fleet providers and / or consumers.Summary of the InventionTo achieve the above object, according to an exemplary embodiment of the present disclosure, there is provided a car sharing system related to a car sharing service in which a plurality of vehicles including at least one of a private ownership vehicle and a corporate ownership vehicle are shared among a plurality of users to be used, the car sharing service being operated by a company other than a company as an owner of the corporate ownership vehicles, the car sharing system including:a first memory configured to store vehicle planning information about respective usage plans of the plurality of vehicles;a second storage configured to store parking station planning information on respective usage plans of a plurality of parking stations configured in advance to park the vehicles;a communication unit configured to receive, from a user via a user terminal, a usage reservation for a vehicle among the plurality of vehicles available at a parking station in the vicinity of a departure location of the user during a period desired by the user, and for a parking station among the plurality of parking stations located in a vicinity of a destination location of the user at which the vehicle can be returned at a time desired by the user, based on the vehicle planning information and the parking station planning information,a reservation processor configured to register the usage reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory;a key information supply unit configured to supply key information for use of the vehicle corresponding to the use reservation registered in the vehicle planning information to a mobile terminal of the user corresponding to the use reservation,a determination unit configured to determine that a user of a vehicle or a person connected to the owner needs a replacement vehicle when the vehicle is subject to the use reservation based on preset planning information;wherein the reservation processor is configured to make use reservation with respect to a period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a spare vehicle different from the vehicle among the plurality of vehicles available during the period, and for a predetermined parking station among the plurality of parking stations to which the spare vehicle can be returned within the period; and register the use reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory. The key information supply unit supplies key information for use of the other vehicle to a mobile terminal of the owner of the vehicle or the person connected to the owner.According to this embodiment, the car sharing system receives a usage reservation for a vehicle among a plurality of vehicles including at least one of a private ownership vehicle and a company ownership vehicle that are located in the vicinity of a departure location of the user during a period desired by the user. Therefore, when a large number of privately owned vehicles and company owned vehicles are registered, the user can borrow a vehicle in the vicinity of the departure place, for example, the user's home or the like. Also, the car sharing system receives the usage reservation for one parking station among a plurality of parking stations in the vicinity of the user's destination at which the vehicle can be returned at a time desired by the user. Therefore, by setting a destination other than the departure location, the user can enjoy one-way use for a simple travel route, which means that the vehicle is returned at a parking station in the vicinity of the destination. Meanwhile, the car sharing system automatically makes a use reservation for a spare vehicle (another vehicle) other than the vehicle with respect to a period for an owner of the vehicle provided for sharing or a person connected to the user (for example, a family member, a relative, a near friend, etc. of the owner, hereinafter referred to as "the owner or the like") to use the vehicle. Therefore, the owner or the like who provides the vehicle in the car sharing service can use the spare vehicle during a period registered in advance for the owner or the like to use the provided vehicle even when the provided vehicle has been brought to a parking station remote from the home location due to the use for a simple travel route. As such, the car sharing system provides a vehicle around a departure place of the user and a use for a simple travel route of the vehicle while maintaining convenience for the owner or the like of the vehicle, and thus convenience for the users can be improved.Also, in the present embodiment, the reservation processor may make the use reservation with respect to a period included in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a vehicle parked at a parking station in the vicinity of a home location of the vehicle as the other vehicle, and for a parking station in the vicinity of the home location of the vehicle as the predetermined parking station; and may register the use reservation in the vehicle planning information in the first storage and the parking station planning information in the second storage.According to this embodiment, the car sharing system takes the use reservation for a spare vehicle and a parking station as the return location in a form in which the home location of the provided vehicle is set as the departure location and the destination with respect to the period for the owner or the like to use the provided vehicle. Therefore, even if the provided vehicle has been brought to a parking station other than the home location, due to the use for a simple travel route of the provided vehicle within the period for the owner or the like of the provided vehicle to use the provided vehicle, the owner or the like can use the spare vehicle and return it to a parking station in the vicinity of his / her home.Also, in the above embodiment, in response to a request from a user terminal corresponding to the owner of the vehicle or the person connected to the owner, the reservation processor may change the other vehicle of the use reservation that has been registered in the vehicle planning information with respect to the period for the owner of the vehicle or the person connected to the owner of the vehicle to use the vehicle to another vehicle parked in the parking station in the vicinity of the departure location other than the home location of the vehicle during the period.According to this embodiment, in response to a request from a user terminal of the owner or the like of the provided vehicle, the car sharing system changes the spare vehicle of the use reservation with respect to the period for the owner or the like to use the vehicle to another spare vehicle in the parking station in the vicinity of the departure location other than the home location of the provided vehicle. Therefore, since the owner or the like of the provided vehicle can change the departure location of the spare vehicle later, the convenience for the owner or the like of the provided vehicle is improved.Also, in the above embodiment, in response to a request from a user terminal corresponding to the owner of the vehicle or the person connected to the owner, the reservation processor may change the predetermined parking station of the use reservation registered in the parking station planning information with respect to the period for the owner of the vehicle or the person connected to the owner to use the vehicle to a parking station in the vicinity of the destination other than the home location of the vehicle.According to this embodiment, in response to a request from a user terminal of the owner or the like of the provided vehicle, the car sharing system changes the parking station as the return location of the spare vehicle of the use reservation with respect to the period for the owner or the like to use the vehicle to a parking station in the vicinity of the destination location other than the home location of the provided vehicle. Accordingly, since the owner or the like of the provided vehicle can change the destination of the spare vehicle later, the convenience for the owner or the like of the provided vehicle is improved.Also, in the above embodiment, the reservation processor may make the use reservation in response to a request from a user terminal corresponding to the owner of the vehicle or the person connected to the owner with respect to the period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a vehicle parked at the parking station in the vicinity of the destination specified in the request as the other vehicle, or for a parking station in the vicinity of the destination specified in the request as the predetermined parking station; and registers the use reservation in the vehicle planning information in the first memory and the parking station planning information in the second memory.According to this embodiment, the car sharing system makes use reservation with respect to the period for the owner or the like to use the vehicle for a spare vehicle and a parking station as the return location corresponding to the departure location and the destination specified in a request from a user terminal of the owner or the like to use the provided vehicle. Therefore, when planning of the provided vehicle is registered by a mobile terminal or the like of him / her by himself, the owner or the like of the provided vehicle can specify the departure place and the destination place for each period for the owner or the like to use the provided vehicle, so that a spare vehicle is provided for him / her according to his / her convenience. Therefore, the car sharing system can improve convenience for the owner or the like of the provided vehicle.Also, in the above embodiment, the reservation processor may make the use reservation with respect to the period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a vehicle parked at the parking station in the vicinity of the departure place registered in advance as the other vehicle, and for a parking station in the vicinity of the destination place registered in advance as the predetermined parking station; and may register the use reservation in the vehicle planning information in the first storage and the parking station planning information in the second storage.According to this embodiment, the car sharing system makes the use reservation with respect to the period for the owner or the like to use the provided vehicle for a spare vehicle and a parking station as the return location corresponding to the departure location and the destination location registered in advance. Therefore, by registering in advance the departure location and the destination of the use reservation with respect to the period for the owner or the like to use the provided vehicle, a spare vehicle is provided for his / her convenience for the owner or the like of the provided vehicle. Therefore, the car sharing system can improve convenience for the owner or the like of the provided vehicle.Also, in the above embodiment, the plurality of parking stations may include parking stations corresponding to the home locations of at least some of the plurality of vehicles registered in advance.According to this embodiment, as sharing targets, the car sharing system can use not only the provided vehicle but also the home location of the provided vehicle (e.g., the parking space at the owner's home) as a parking station of another provided vehicle. Therefore, when a large number of privately owned vehicles and company owned vehicles are registered and thus the home locations of these vehicles that would be spread over different places are registered as parking stations, it becomes easier for the user to be provided with a vehicle in the vicinity of the departure location such as the user's home and / or a parking station in the vicinity of the destination location. Therefore, the car sharing system can further improve the convenience for the user.Also, in the above embodiments, when registration is made in the vehicle planning information in the first memory and in the parking station planning information in the second memory, the reservation processor may prioritize a use reservation with respect to the period for the owner of the vehicle or the person connected to the owner to use the vehicle over a use reservation received from the user terminal of a user.According to this embodiment, the car sharing system can make the use reservation for the spare vehicle more securely with respect to the period for the owner or the like to use the provided vehicle and the parking station as the return location. Therefore, the car sharing system can more securely maintain the convenience for the owner or the like of the provided vehicle.The embodiments in the present disclosure may also be realized in other forms such as an information processing apparatus, an information processing method, and an information processing program.According to the above-described embodiments, it is possible to provide a car sharing system or the like that further enhances convenience for users in a car sharing service.Brief Description of the DrawingsFIG. 1 is a configuration diagram illustrating an example of a car sharing system; FIG. 2 is a functional block diagram illustrating an example of a car sharing system; FIG. 3 is a diagram illustrating an example of a use reservation screen; FIG. 4A is a flowchart schematically illustrating an example of operations of a car sharing system; FIG. 4B is a flowchart schematically illustrating an example of operations of a car sharing system; FIG. 5 is a flowchart schematically illustrating another example of the operation of the car sharing system.DETAILED DESCRIPTION OF EMBODIMENTSHereinafter, embodiments will be described with reference to the drawings.[Outline of Car Sharing System]First, an overview of the car sharing system 1 according to an embodiment will be described with reference to FIG. 1.FIG. 1 is a block diagram schematically illustrating a hardware configuration of an example of the car-sharing system (car-sharing system 1) according to the present embodiment.The car sharing system 1 according to the present embodiment includes a plurality of private-owned vehicles 10, mobile terminals 20 belonging to a plurality of users of the C2C car sharing, a car sharing management server 30, and a vehicle management server 40.Note that some or all of the functions of the car sharing management server 30 and the vehicle management server 40 may be integrated with each other. Also, functions of the car sharing management server 30 may be shared among a plurality of server devices, and the same applies to the vehicle management server 40.The car sharing system 1 implements a C2C (C2C car sharing) type car sharing service in which a plurality of privately owned vehicles 10 registered in advance according to a predetermined contract between a company and owners are shared to be used among a plurality of user members (hereinafter, simply referred to as "users") registered in advance according to a predetermined contract between the company and the membership advertisers. The users may include not only a user other than an owner of a vehicle 10 (hereinafter referred to as a "general user") but also a user other than the owner of a vehicle 10 (hereinafter referred to as a "vehicle providing user"). This is because a user to whom a certain vehicle 10 belongs may also wish to lend another vehicle 10 (for example, in a case where another vehicle 10 having a larger seating number than the own vehicle 10 is required), depending on circumstances. This is also because, as described below, there may be a case where it is necessary to provide a vehicle 10 other than a substitute vehicle to a vehicle providing user. Similarly, the users may include persons associated with the owner of a vehicle 10 (e.g., family members, relatives, near friends, etc. of the owner), which will be described below.Also, the car sharing system 1 allows a user to use a simple travel route of a vehicle 10 (specifically, use the vehicle 10 on the premise that the vehicle is returned at a parking station other than the home location of the vehicle 10). Accordingly, as an alternative means, when the vehicle 10 is not located at the home location, the car sharing system 1 allows the vehicle providing user of the vehicle 10 to use another vehicle 10 (a vehicle 10 belonging to another vehicle providing user, namely, a spare vehicle) with reference to a use period of the vehicle 10 belonging to the vehicle providing user registered in advance by the vehicle providing user (hereinafter, referred to as the "owner use period").Note that since the plurality of vehicles 10 have the same configuration with respect to the car sharing system 1, one of the plurality of vehicles 10 is representatively illustrated in FIG. 1 as a representative. Also, among the plurality of vehicles 10, all the vehicles may be available for use for a simple travel route, or only some of the vehicles 10 may be available for use for a simple travel route.< About Vehicle>Each of the plurality of vehicles 10 is shared by a plurality of users in the C2C car sharing. The plurality of vehicles 10 are available (movable), for example, in the entire service provision area of the C2C car sharing. Alternatively, it could be assumed that the service provision area of the C2C car sharing is divided into a plurality of subareas and each vehicle 10 belongs to a subareas including its home location so as to be available (movable) only within the associated subareas.The vehicle 10 is configured to be capable of short-range communication (for example, BLE (Bluetooth (registered trademark) Low Energy) or NFC (Near-Field Communication) communication) with the mobile terminal 20 by a predetermined method to perform an authentication process based on an authentication key received from the authentication server 20. Then, when the authentication succeeds, the vehicle 10 allows a user operation by the mobile terminal 20 or a direct user operation on the vehicle 10 regarding locking and unlocking of the vehicle 10, activation of the vehicle 10, and the like. In other words, when the authentication succeeds, the vehicle 10 allows the user of the corresponding mobile terminal 20 to use the vehicle 10 itself, such as locking and unlocking a door, and activation.Also, the vehicle 10 is communicatively connected to the vehicle management server 40 via a predetermined communication network, which may include, for example, a mobile communication network having base stations at the ends, a satellite communication network using a communication satellite, and the Internet to transmit and receive various signals with the vehicle management server 40.Note that the plurality of vehicles 10 include not only privately owned vehicles 10 but also company owned vehicles 10 (e.g., company cars) that belong to companies other than a company that operates the C2C car sharing. Similarly, all of the plurality of vehicles 10 may be owned by companies other than the company operating the C2C car sharing. In this case, a vehicle providing user corresponds to a company providing a vehicle 10 (or a company or individual taking over management from the company).< On Mobile Terminal>The mobile terminal 20 is a user terminal belonging to a user sharing the vehicles 10 for use.The user terminal 20 receives an authentication key for use of a vehicle 10 from the car sharing management server 30, and transmits the authentication key to the vehicle 10 (the key unit 12 described below) to lock, unlock, or activate the vehicle 10 based on an operation performed by the user on the mobile terminal 20 or on a vehicle 10.The mobile terminal 20 includes a mobile terminal 20A belonging to a vehicle providing user as the owner of a vehicle 10, and a mobile terminal 20B belonging to a general user. Hereinafter, when the mobile terminal 20A and 20B are not distinguished, the term "mobile terminal 20" is used in the description.Note that, since a plurality of mobile terminals 20A corresponding to a plurality of vehicle-providing users have the same configuration with respect to the car sharing system 1, in FIG. 1, one of the mobile terminals 20A belonging to one of the vehicle-providing users corresponding to one of the vehicles 10 is representatively illustrated. Also, since a plurality of mobile terminals 20B corresponding to a plurality of general users have the same configuration with respect to the car sharing system 1, one of the mobile terminals 20B belonging to one of the general users corresponding to one of the vehicles 10 is representatively illustrated in FIG. 1.< On Car Sharing Management Server>The car sharing management server 30 operates and manages the C2C car sharing.The car sharing management server 30 manages use plans of the vehicles 10 in the C2C car sharing, for example. A use plan of a vehicle 10 includes not only a use plan of the vehicle 10 in the C2C car sharing but also a use plan of the vehicle 10 by the owner (vehicle providing user). The car sharing management server 30 also manages plans of a plurality of parking stations registered in advance, serving as parking spaces and return places of the vehicles 10. The plurality of parking stations may include a parking station corresponding to the home location of a vehicle 10 (for example, a parking space at the home of an owner) provided by the owner of the vehicle 10 (hereinafter, referred to as the "station provided by the owner"). Also, the plurality of parking stations may include a parking station (hereinafter, referred to as a "station provided by the company") prepared and provided in advance by a company providing the C2C car sharing. Also, the station provided by the owner may be classified as a dedicated parking station occupied only by the vehicle 10 of the owner (hereinafter, referred to as an "owner-provided dedicated parking station") based on contract conditions and the like between the owner of the vehicle 10 and the company providing the C2C car sharing station; and a parking station available as a return location of another vehicle 10 when the vehicle 10 of the owner is absent (hereinafter, referred to as an "owner-provided shared parking station").Specifically, the car sharing management server 30 receives a usage reservation for a vehicle 10 from a mobile terminal 20 through a predetermined communication network, which may include, for example, a mobile communication network having base stations at the ends, a satellite communication network using a communication satellite, and the Internet. Also, the car-sharing management server 30 receives registration of a provision plan of the vehicle 10 from a mobile terminal 20A to the C2C car-sharing (e.g., a period during which the vehicle 10 can be provided for the C2C car-sharing, etc., hereinafter referred to as the "vehicle provision plan"). Then, the car sharing management server 30 updates information on the usage plan of the vehicle 10 (hereinafter referred to as "vehicle planning information") and information on the usage plan of the parking station (hereinafter referred to as "parking station planning information").Also, the car sharing management server 30 manages authentication keys for the users to use the vehicles 10 in the C2C car sharing, for example. Specifically, the car sharing management server 30 is communicatively connected to the vehicle management server 40 via a predetermined communication network, which may include, for example, the Internet network and the like, and requests the vehicle management server 40 to output an authentication key in response to a use reservation for a vehicle 10 to be registered in the vehicle planning information. Then, the car sharing management server 30 receives the authentication key from the vehicle management server 40, and supplies the received authentication key to the user's mobile terminal 20 according to the use reservation for the vehicle 10.< On Vehicle Management Server>The vehicle management server 40 manages the vehicles 10.The vehicle management server 40 is communicatively connected to the vehicles 10 via a predetermined communication network, which may include, for example, a mobile communication network having base stations at the ends, a satellite communication network using a communication satellite, and the Internet to exchange various signals with the vehicles 10, as described above. Thereby, the vehicle management server 40 can transmit various instructions to vehicles 10, receive information on various states, and the like from the vehicles 10 to manage the plurality of vehicles 10.Also, in response to a request received from car sharing management server 30 via a predetermined communication network, which may include, for example, the Internet network and the like, vehicle management server 40 outputs a time-limited authentication key (for example, an authentication key valid only for a predetermined validity period from the start date and the start time to the end date and the end time specified in a use reservation with a predetermined buffer period added). The vehicle management server 40 transmits the output authentication key to the car sharing management server 30 and the vehicle 10 corresponding to the authentication key. Thereby, the vehicle 10 (specifically, the key unit 12 described below) can receive the authentication key and can allow the user to use the vehicle 10 during the validity period of the authentication key based on the authentication key.[Configuration of Car Sharing System]Next, with reference to FIG. 2, in addition to FIG. 1, a configuration of the car sharing system 1 according to the present embodiment will be described in detail.FIG. 2 is a functional block diagram illustrating a functional configuration of an example of a car-sharing system (car-sharing system 1) according to the present embodiment.<Konfiguration of Vehicle>The vehicle 10 includes a locking / unlocking / activating unit 11, a key unit 12, a global navigation satellite system (GNSS) module 13, and a data communication module (DCM) 14.The locking / unlocking / activating unit 11 is mounted on the vehicle 10 to lock or unlock a door of the vehicle 10 and activate the vehicle 10 based on the signals exchanged with the key unit 12. Activation of the vehicle 10 includes starting an engine 117 described below in the case where the vehicle 10 uses the engine 117 as a main power source; turning on the power of an electric motor in the case where the vehicle 10 is capable of traveling by the power of the electric motor (for example, turning on a switch of a power path between the electric motor for traveling and a battery as a power supply); and activating an ECU (electronic control unit) that performs integrated control of the vehicle 10. Hereinafter, in the present embodiment, it is assumed in the description that activation of the vehicle 10 means starting of the engine 117. Specifically, the locking / unlocking / activating unit 11 locks and unlocks a door of the vehicle 10 in response to a lock signal and an unlocking signal transmitted from the key unit 12 as a radio wave in an RF band (RF) (for example, 300 MHz to 3 GHz) (hereinafter referred to as the "RF radio wave"). Also, the locking / unlocking / activating unit 11 activates the vehicle 10 caused by a pressing operation on an activation switch (not illustrated) provided inside the vehicle 10 and depending on exchange with the key unit in a radio wave in an LF band (LF, low frequency) (for example, 30Hz to 300kHz) (hereinafter referred to as the "LF radio wave") and an RF wave. The locking / unlocking / activating unit 11 includes an LF radio transmitter 111, an RF radio receiver 112, a verification ECU 113, a body ECU 114, door lock motors 115, an engine ECU 116, and the engine 117 as the drive power source of the vehicle 10.Note that the locking / unlocking / activating unit 11 is operated based on electric power supplied from an auxiliary battery (not illustrated) installed in the vehicle 10.The LF radio wave transmitter 111 is installed in, for example, the center console or the door handle in the vehicle interior to transmit an LF radio wave according to a controller or verification ECU 113.The RF wave receiver 112 is provided, for example, in a casing of the trunk room of the vehicle 10 to receive an RF radio wave according to a control of the verification ECU 113.The verification ECU 113 is an electronic control unit that controls locking / unlocking of the door or doors of the vehicle 10 and activation of the vehicle 10 based on exchange of signals with the key unit 12. The verification ECU 113 may be arbitrarily implemented by hardware, software, or a combination thereof. The verification ECU 113 may be mainly constituted with, for example, a microcomputer including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a nonvolatile auxiliary storage device, an RTC (Real Time Clock), and a communication interface. Here, the verification ECU 113 implements various control processes by executing various programs stored in the ROM and the auxiliary nonvolatile memory device, for example, on the CPU. Hereinafter, the same applies to a key ECU 124 which will be described below.The verification ECU 113 receives an unlocking signal and a locking signal transmitted as RF radio waves from the key unit 12 through the RF radio receiver 112.Also, in the case of receiving an unlock signal or a lock signal, the verification ECU 113 authenticates the transmission source of the unlock signal or the lock signal (key unit 12) based on key information included in the unlock signal or the lock signal (hereinafter referred to as "internal key information"). For example, when internal key information registered in advance in an internal memory such as the auxiliary storage device matches the internal key information included in the unlock signal or the lock signal, the verification ECU 113 determines that the authentication is successful; or otherwise determines that the authentication has failed.Also, for example, the verification ECU 113 may perform "challenge and response" authentication by transmitting, by the LF radio wave transmitter 111, an LF radio wave including a "challenge" generated by a predetermined method using the internal key information in the internal memory to a key unit 12 and receiving, by the receiver 112, a "response" sent back from the key unit 12, on which the authentication may be based.Then, when the authentication succeeds, the verification ECU 113 transmits an unlocking instruction (upon receipt of an unlocking signal) or a locking instruction (upon receipt of a locking signal) to the body ECU 114 through an in-vehicle network such as a CAN (Controller Area Network).Also, after an unlocking instruction or a locking instruction is transmitted to the body ECU 114, when a response indicating that the door has been unlocked or locked normally (an unlocking response or a locking response) is received from the body ECU 114 via the in-vehicle network such as a CAN, the verification ECU 113 transmits, through the LF radio transmitter 111, a message indicating that the door has been unlocked or locked (an unlocking message or a locking message).Note that, in an unlock signal, only some of the doors of the vehicle 10 may be referred to as targets to be unlocked. In such a case, the verification ECU 113 specifies the doors to be unlocked in the unlocking instruction. This causes the body ECU 114 to operate only the door lock motors 115 corresponding to the specified doors, and thus allows only the specified doors to be unlocked.Also, in the case where a pressing operation on the activation switch described above is performed, the verification ECU 113 authenticates the key unit 12 by exchanging signals with the key unit 12 via the LF radio wave transmitter 111 and the RF radio wave receiver 112.For example, the verification ECU 113 transmits a request signal in the LF band requesting a response of the internal key information from the LF radio wave transmitter 111 to the key unit 12. When a response signal indicating that the internal key information has been received from the key unit 12 by the RF wave receiver 112, the verification ECU 113 determines whether the authentication has succeeded or failed based on a correspondence between the internal key information registered in advance in the internal memory and the internal key information included in the response signal, as in the case of locking / unlocking the doors.Also, the verification ECU 113 may perform, for example, "challenge and response" authentication as in the case of locking / unlocking the doors.Then, when the authentication succeeds, the verification ECU 113 transmits a start instruction of the engine 117 to the engine ECU 116 via the in-vehicle network such as a CAN.The body ECU 114 is an electronic control unit for controlling operations of a door lock motor 115 communicatively connected by a one-to-one communication line or the like. In response to an unlocking instruction from the verification ECU 113, the body ECU 114 outputs a control instruction to cause the door lock motor 115 to perform an unlocking operation. Also, in response to a lock instruction from the verification ECU 113, the body ECU 114 outputs a control instruction to cause the door lock motor 115 to perform a lock operation. Also, once the door is normally unlocked or locked by the control instruction output to the door lock motor 115, the body ECU 114 transmits an unlocking response or a locking response to the verification ECU 113 via the in-vehicle network such as a CAN.The door lock motor 115 is a known electric actuator that unlocks or locks the door or doors of the vehicle 10 in response to a control instruction from the body ECU 114.The engine ECU 116 is an electronic control unit that drives and controls the engine 117. Specifically, the engine ECU 116 drives and controls various actuators such as a starter and an injector installed in the engine 117. When a start instruction is input from the verification ECU 113, the engine ECU 116 outputs a control instruction to various actuators such as a starter and an injector of the engine 117 to start the engine 117.The key unit 12 performs an authentication process based on the authentication key received from the mobile terminal 20, and when the authentication is successful, the user to whom the mobile terminal 20 belongs allows various operations of the vehicle 10 to be performed (for example, unlocking, locking, activating, etc. of the vehicle 10). Specifically, when the authentication succeeds, the key unit 12 transmits and receives signals with the locking / unlocking / activating unit 11 to cause the locking / unlocking / activating unit 11 to transition to a state in which the door or doors of the vehicle 10 can be locked and unlocked and the vehicle can be activated in response to an operation performed by the user on the mobile terminal 20 or the vehicle 10. More specifically, the key unit 12 is placed inside the vehicle 10 to transmit an unlock signal and a lock signal as RF waves to the lock / unlock / activation unit 11 in response to an unlock request and a lock request transmitted from the mobile terminal 20, respectively. Also, when a pressing operation is performed on the activation switch provided inside the vehicle 10, the key unit 12 exchanges signals with the locking / unlocking / activating unit 11 in response to signals in the LF band transmitted from the locking / unlocking / activating unit 11. The key unit 12 includes an LF radio wave receiver 121, an RF radio wave transmitter 122, a communicator 123, and a key ECU 124.The key unit 12 may be placed at a position difficult to visually recognize (e.g., inside a glove box or center console box, etc.) by a user seated on any of the seats of the vehicle 10. Also, the key unit 12 may be fixed or not fixed to the vehicle 10. Also, the key unit 12 may be operated with a knob cell or the like installed, or may be operated with electric power supplied from an auxiliary battery installed in the vehicle 10.The LF radio wave receiver 121 receives an LF radio wave from the outside according to the control of the key ECU 124.The LF radio wave transmitter 122 transmits an LF radio wave to the outside according to control of the key ECU 124.The communicator 123 is a device for performing short-range communication according to a predetermined method with the mobile terminal 20 according to control of the key ECU 124. The communicator 123 may be, for example, a BLE communication module to communicate with the mobile terminal 20 according to the BLE communication standard. Also, the following description assumes that the communication standard employed by the communicator 123 complies with the BLE communication.Note that the communicator 123 may be a communication device conforming to a communication standard that aims at a very short communication range, for example, an NFC (Near Field Communication) standard or the like. In this case, the communicator 123 may be installed at a position near the body surface of the vehicle 10 outside the vehicle interior (e.g., the inside of a handle) or the like. This allows the key unit 12 (the key ECU 124) to communicate with the mobile terminal 20 outside the vehicle interior even when the communicator 123 has a very short communication range.The key ECU 124 is an electronic control unit that controls transmission of a lock signal and an unlock signal to the lock / unlock / activation unit 11 in response to a lock request and an unlock request received from the mobile terminal 20.The key ECU 124 controls the communicator 123 to establish a state in which communication with the mobile terminal 20 is enabled based on a predetermined communication standard, for example, the BLE communication standard.Specifically, the key ECU 124 periodically (e.g., every several seconds) transmits an advertisement packet including advertisement information within a predetermined reachable communication range (e.g., several meters to several 10 meters) from the communicator 123. The advertising information includes a UUID (Universally Unique Identity), a device ID (Identifier), and the like corresponding to the key unit 12. This allows the mobile terminal 20 to receive the advertising packet to confirm the advertising information to identify the key unit 12 installed in the target vehicle.In response to receiving a connection request through the BLE communication from the mobile terminal 20 located within the communication range of the vehicle 10 (the key unit 12) that has received the advertising packet, the key ECU 124 establishes a state in which communication with the mobile terminal 20 is enabled through BLE communication. At the same time, the key ECU 124 transmits a connection response to the mobile terminal 20 indicating that a state in which the BLE communication is enabled by the BLE communication through the communicator 123 has been established.Also, in the above-described state in which the BLE communication is established, the key ECU 124 receives an authentication request including the authentication key associated with the key unit 12 from the mobile terminal 20 via the communicator 123.Also, after receiving the authentication request including the authentication key associated with the key unit 12 from the mobile terminal 20, the key ECU 124 authenticates the mobile terminal 20 based on the authentication key. Once the authentication succeeds, the key ECU 124 stores the internal key information stored in the internal memory of the auxiliary storage device or the like to a usable state. The internal key information is stored in a state unusable for authentication in the locking / unlocking / activating unit 11, for example, in an inaccessible state, an encrypted state, or the like. Therefore, once the authentication of the mobile terminal 20 is successful, the key ECU 124 changes the access permission of the internal memory to change the internal key information to an accessible state, or decrypts the encrypted internal key information based on the authentication key. This allows the key ECU 124 to access the internal key information that is normally inaccessible, transmit an unlock signal or a lock signal including the internal key information to the lock / unlock / activation unit 11, and decrypt the encrypted internal key information based on the authentication key. Thus, the locking / unlocking / activating unit 11 can perform appropriate authentication based on the internal key information included in the unlocking signal and the locking signal. Also, when a malicious third party illegally acquires the key unit 12, the internal key information in the key unit 12 is not accessible or encrypted, and thus it is possible to prevent theft of the vehicle 10.In the above-described state in which the BLE communication has been established, the key ECU 124 also receives an unlock request and a lock request from the mobile terminal 20 through the communicator 123. Once the authentication of the mobile terminal 20 is successful (specifically, the authentication of the mobile terminal 20 is successful, and thereafter the state of established BLE communication is continued), and when an unlock request or a lock request is received from the mobile terminal 20, the key ECU 124 transmits an unlock signal or a lock signal including the internal key information to the lock / unlock / activation unit 11 through the LF radio wave transmitter 122.Thus, after the above-described authentication process, in the locking / unlocking / activating unit 11, locking or unlocking of the door or doors of the vehicle 10 is realized.Also, after an unlock signal is transmitted to the lock / unlock / activation unit 11, when an unlock notification is received from the lock / unlock / activation unit 11 by the LF radio wave receiver 121, the key ECU 124 transmits an unlock completion notification to the mobile terminal 20 with which the BLE communication is established, namely, the mobile terminal 20 as the transmission source of the unlock request, by the communicator 123. Similarly, after a lock signal is transmitted to the lock / unlock / activation unit 11, when a lock message is received from the lock / unlock / activation unit 11 by the LF radio wave receiver 121, the key ECU 124 transmits a lock completion message to the mobile terminal 20 with which the BLE communication is established via the communicator 123. This allows the mobile terminal 20 to confirm that the locking / unlocking of the vehicle 10 has been normally finished, as the transmission source of the locking request or the unlocking request, based on a predetermined operation performed by the user. Therefore, when an unlocking completion notification or a locking completion notification is received, with the content of the notification being displayed on the mobile terminal 20 (a display 25 described later), the user can confirm that the locking / unlocking of the vehicle 10 has been normally completed.Also, as described above, when the activation switch provided inside the vehicle 10 is pressed in response to a signal in the LF band transmitted from the locking / unlocking / activating unit 11, the key ECU 124 exchanges signals with the locking / unlocking / activating unit 11.For example, when a request signal as described above is received from the locking / unlocking / activating unit 11 by the LF radio wave receiver 121, the key ECU 124 transmits a response signal including the internal key information stored in the internal memory or the like to the locking / unlocking / activating unit 11 by the LF radio wave transmitter 122.Also, for example, when an LF radio wave including a "challenge" is received from the locking / unlocking / activating unit 11 by the LF radio wave receiver 121, the key ECU 124 generates a "response" based on the internal key information and transmits the "response" to the locking / unlocking / activating unit 11 via the RF radio wave transmitter 122.Thus, after the authentication process, in the locking / unlocking / activating unit 11 as described above, the start of the engine 117 is realized (namely, the vehicle 10 is activated).The GNSS module 13 determines the position (in terms of, e.g., latitude, longitude, altitude, etc.) of a device in which it is installed, of the vehicle 10, based on signals received from three or more (preferably four or more) artificial satellites via the GNSS module 13. Hereinafter, the same applies to a GNSS module 24 of the mobile terminal 20, which will be described below. The GNSS module 13 is communicatively connected to the DCM 14 or the like via a one-to-one communication line or an in-vehicle network such as a CAN, and the measured position information regarding the vehicle 10 is included in the DCM 14 or the like.The DCM 14 bidirectionally communicates with the vehicle management server 40 via a predetermined communication network, which may include, for example, a mobile communication network having base stations at the ends, a satellite communication network using a communication satellite, and the Internet. For example, the DCM 14 transmits information on the state of the vehicle 10 (e.g., information acquired by various sensors) and the surrounding state of the vehicle 10 (e.g., surrounding images captured by a camera installed in the vehicle 10) including the position information of the vehicle 10 input from the GNSS module 13 (hereinafter referred to as the "vehicle information") to the vehicle management server 40.<Konfiguration of Mobile Terminal>The mobile terminal 20 includes a communicator 21, a communicator 22, a controller 23, a GNSS module 24, and a touch display (hereinafter, simply referred to as a "display") 25.The communicator 21 is a device for performing short-range communication with the vehicle 10 (the key unit 12) according to the same communication standard as that of the communicator 123 of the vehicle 10.The communicator 22 is a device for communicating with the car-sharing management server 30 and the like via a predetermined communication network. The communicator 22 is a mobile communication module according to a communication standard such as LTE (Long Term Evolution), 4G (fourth generation), 5G (fifth generation), or the like.The controller 23 performs various control processes in the mobile terminal 20. The functions of the controller 23 may be arbitrarily implemented by hardware, software, or a combination thereof including, for example, a CPU, a RAM, a ROM, a nonvolatile auxiliary storage device, an RTC, and various interfaces for communication. As functional units obtained by executing one or more programs stored in the ROM or the auxiliary nonvolatile memory device on the CPU, the controller 23 includes, for example, an inter-vehicle communication interface (hereinafter referred to as the "inter-vehicle communication interface") 231, an inter-server communication interface (hereinafter referred to as the "inter-server communication interface") 232, a reservation unit 233, an authentication key acquirer 234, and a vehicle operation unit 235. Also, as a functional unit specific to the mobile terminal 20A of a vehicle providing user, the controller 23 includes a vehicle provision plan 236. The controller 23 also includes, for example, a memory 230 specified as a storage area in the auxiliary nonvolatile memory device, and a process of holding (storing) various data items in the memory 230 is implemented by a predetermined program stored in the ROM or the auxiliary memory device. The functions of the inter-vehicle communication interface 231, the inter-server communication interface 232, the reservation unit 233, the authentication key acquirer 234, the vehicle operation unit 235, and the vehicle provision scheduler 236 may be activated (usable by the user), for example, when a predetermined application installed in advance in the mobile terminal 20 (hereinafter referred to as the "car sharing application") is activated.The GNSS module 24 determines the position of the mobile terminal 20.Note that the mobile terminal 20 can determine the position of the mobile terminal 20 by base station positioning based on wireless communication with multiple base stations.The display 25 is, for example, a liquid crystal display or an organic EL ("electroluminescence") display, and is a display device provided on the front surface of the mobile terminal 20, and also serves as a touch panel type operation unit of the known type.The inter-vehicle communication interface 231 uses the communicator 21 to perform short-range bidirectional communication (BLE communication in the predetermined embodiment) of a predetermined method with the vehicle 10, specifically, with the key unit 12 to transmit and receive various signals. The vehicle operation unit 235 exchanges the signals with the vehicle 10 (the key unit 12) via the inter-vehicle communication interface 231.The intermediate server communication interface 232 uses the communicator 22 to connect to a predetermined communication network to bidirectionally transmit and receive various signals including data signals and control signals to the car sharing management server 30. The reservation unit 233, the authentication key acquirer 234, the vehicle provision scheduler 236, and the like exchange signals with the car sharing management server 30 via the intermediate server communication interface 232.The reservation unit 233 makes use reservation for a vehicle 10, for example, as a response to an operation performed by a user on a predetermined GUI (Graphical User Interface) displayed on the display 25. The reservation unit 233 displays, for example, an operation screen (application screen) related to a car sharing application as a GUI, specifically, an application screen for use reservation of a vehicle 10 (hereinafter, referred to as the "use reservation screen") on the display 25. The user selects (inputs) desired conditions for the vehicle 10 the user wants to use through the touch panel or the like on the use reservation screen. The desired conditions include a departure location and a destination location, desired specifications of the vehicle 10 (for example, the type of vehicle such as step check, wagon, van, sport utility vehicle (SUV), etc., and a seating capacity), and a desired period of use (start date and time of use and end date and time of use). According to the desired conditions input or selected by an operation performed by the user through the touch panel or the like, the reservation unit 233 transmits a signal including the desired conditions to the car sharing management server 30 (reservation candidate acquisition request) that requests information about vehicles 10 suitable as candidates for use reservation and parking stations suitable as candidates for the return location of the vehicle 10. Thereby, the reservation unit 233 can obtain (receive) information on the candidate vehicles 10 satisfying the user's requirements and information on the candidate parking stations as the return location from the car sharing management server 30.Based on the information obtained from the car sharing management server 30, the reservation unit 233 displays information on the candidate vehicles 10 and the candidate parking stations as the return location on the use reservation screen on the display 25. Thereby, the user can select a vehicle 10 to be used by him / her or a parking station to be used as the return location on the use reservation screen via a touch panel or the like.The reservation unit 233 transmits a signal requesting use reservation (hereinafter, referred to as a "use reservation request") for a vehicle 10 and a parking station as the return location including the vehicle 10 selected by an operation performed by the user via a touch panel or the like to the car sharing management server 30.For example, FIG. 3 illustrates an example of a use reservation screen (use reservation screen 3000) displayed on the display 25 of the mobile terminal 20. Specifically, the use reservation screen 3000 presents an operation screen for selecting a vehicle 10 to be used (hereinafter referred to as the "vehicle selection screen") or an operation screen for selecting a parking station for returning the vehicle selected on the vehicle selection screen (hereinafter referred to as the "return location selection screen").As illustrated in FIG. 3, the use reservation screen 3000 includes a map image around an input departure place or destination to be set in advance by the user via a touch panel or the like on which icons 3001 to 3005 are displayed superimposed. The geographical area included in the map image on the use reservation screen 3000, namely, the geographical area of the positions of the vehicles 10 and the parking stations that can be extracted as candidates by the car sharing management server 30 may be, for example, an area within a predetermined distance (e.g., several hundreds meters) from the departure place or the destination set by an input, or may be a predetermined sub-area among a plurality of sub-areas divided in advance in the service provision area including the departure place or the destination set by an input.An icon 3001 represents an available vehicle 10 during the desired use period set by an input from the user and a parking station (an owner-provided station or a company-provided station) at which the vehicle 10 is parked.Icon 3002 represents an owner-provided station at which vehicle 10 may be returned (namely, at which a vehicle 10 whose home location is the owner-provided station is not parked) during the desired use period set by an input from the user.Icon 3003 represents a vehicle 10 that is unavailable because it is out of service, for example, and a parking station (an owner-provided station or a company-provided station) at which the vehicle 10 is parked and another vehicle 10 cannot be returned during the desired use period set by an input from the user.Icon 3004 represents a station provided by a company at which vehicle 10 may be returned during the desired period of use set by input by the user.Icon 3005 represents a station provided by a company at which vehicle 10 cannot be returned during the desired use period set by user input (e.g., a vehicle cannot be parked due to lockout hours).The reservation unit 233 superimposes one of the icons 3001 to 3005 at a position corresponding to a place where each parking station is disposed on the map image of the use reservation screen 3000, and displays the icons. At the same time, based on the departure place, the destination place, the desired use period (the desired use start date and time, and use end date and time) set by an input from the user, the reservation unit 233 transmits a request on the state of each parking station in the vicinity of the departure place or in the vicinity of the destination place (symbols 3001 to 3005) to the car sharing management server 30 (namely, transmits a reservation candidate acquisition request). Thereby, the reservation unit 233 can display the use reservation screen 3000 on the display 25 based on a response to the inquiry from the car sharing management server 30. The user can select a vehicle 10 by, for example, performing a touch operation at the position corresponding to one of the icons 3001 on the display 25 on the use reservation screen 3000 corresponding to the vehicle selection screen. Also, for example, the user on the use reservation screen 3000 corresponding to the return location selection screen may select a parking station as the return location of the vehicle 10 by touching the position corresponding to an icon 3002 or an icon 3004 on the display 25.Note that the reservation unit 233 does not need to display all kinds of icons 3001 to 3005 on the use reservation screen 3000 on the display 25. For example, when the use reservation screen 3000 corresponds to the vehicle selection screen, the reservation unit 233 may display at least the icon 3001 among the icons 3001 to 3005 on the map image of the use reservation screen 3000. Also, for example, when the use reservation screen 3000 corresponds to a return location selection screen, the reservation unit 233 may display at least the icons 3002 and 3004 among the icons 3001 to 3005 on the map image of the use reservation screen 3000. Likewise, a reservation of use for a vehicle 10 could be made on a user terminal other than the mobile terminal 20 (e.g., a laptop or a desktop computer terminal at the user's home of the mobile terminal 20 or a dedicated terminal for reservation of use at stores or the like of the enterprise providing the C2C car sharing service).Referring back to FIGS. 1 and 2, the authentication key acquirer 234 acquires an authentication key of the vehicle 10 whose use reservation is confirmed (namely, registered in the car sharing management server 30) by the reservation unit 233 from the car sharing management server 30. for example, the authentication key acquirer 234 acquires authentication key information including an authentication key automatically supplied from the car sharing management server 30 in response to confirmation of the use reservation by the reservation unit 233. Also, in response to a user operation on a predetermined GUI displayed on the display 25, the authentication key acquirer 234 transmits an authentication key acquisition request to the car sharing management server 30 to acquire the authentication key information to be returned from the management server 30 in response to the authentication key acquisition request. The authentication key acquirer 234 saves the acquired authentication key information in the storage 230 (authentication key information 230A).Note that, as a matter of course, the controller 23 of a vehicle-providing user mobile terminal 20A holds an authentication key of a vehicle 10 belonging to the vehicle-providing user (hereinafter, referred to as an "own vehicle") in a nonvolatile internal memory such as an auxiliary storage device or the like, separately from an authentication key of a vehicle 10 subjected to use reservation by the reservation unit 233, namely, a vehicle 10 other than the vehicle 10 belonging to the vehicle-providing user. Also, the controller 23 of the vehicle providing user partner mobile terminal 20 maintains the authentication key of the corresponding own vehicle in a nonvolatile internal memory such as an auxiliary storage device at least when the vehicle is used. In this case, with permission of the vehicle providing user, the vehicle management server 40 may provide, via a user terminal such as the mobile terminal 20A, an authentication key of the corresponding provided vehicle (for example, an authentication key having a limited use period) to the mobile terminal 20 of the partner of the vehicle providing user.In response to an operation performed by the user (an operation on the mobile terminal 20 or an operation on the vehicle 10), the vehicle operation unit 235 exchanges signals with the vehicle 10 (the key unit 12) to enable locking, unlocking, activation, or the like of the vehicle 10. Specifically, the vehicle operation unit 235 transmits, to the vehicle 10, an authentication key corresponding to the vehicle 10 (the key unit 12) in a state in which the mobile terminal 20 can communicate with the vehicle 10 (the key unit 12) by short-range communication of a predetermined method. Thereby, after the above-described authentication process in the key unit 12 (the key ECU 124), a state is realized in which it is possible to lock / unlock the door or doors of the vehicle 10, activate the vehicle 10, and so on, in response to an operation on the mobile terminal 20 or an operation on the vehicle 10 performed by the user.Also, after receiving a notification from the vehicle 10 (the key unit 12) (hereinafter referred to as a "lock / unlock function-on notification") indicating that the vehicle is in a state in which it is possible to lock and unlock the vehicle 10 (a state in which the functions of locking and unlocking are turned on), the operation unit 235 displays an operation screen on the display 25 for the user to perform a locking operation or an unlocking operation of the vehicle 10 (hereinafter referred to as a "lock / unlock operation screen"). Then, when the user performs an unlocking operation or a locking operation (for example, a touch operation on a button icon for an unlocking operation or a locking operation) on the locking / unlocking operation screen via a touch panel or the like, the vehicle operation unit 235 transmits an unlocking request or a locking request to the vehicle 10 (the key unit 12). Thereby, after the authentication process is performed in the key unit 12 and the locking / unlocking / activating unit 11 as described above, unlocking or locking of the vehicle 10 is realized.In response to an operation performed by a vehicle providing user on a GUI of the display 25, the vehicle provision scheduler 236 registers a vehicle provision plan including a period during which a vehicle 10 (provided vehicle) belonging to the vehicle providing user is provided to be shared to be used by the plurality of users of the C2C car sharing (hereinafter referred to as "car sharing provision period") and an owner use period. For example, the vehicle provisioning scheduler 236 may receive registration settings on the vehicle provisioning schedule for periods of fixed length (e.g., every 2 weeks or every month) in advance (e.g., several weeks or several days before the fixed length period). For example, the vehicle provision scheduler 236 displays, on the display 25, an operation screen (a vehicle provision schedule setting screen) on which a car sharing provision period can be set. The user may set a car sharing provision period of a vehicle 10 within a fixed length period on the vehicle provision plan setting screen. In this case, the vehicle provision scheduler 236 may recognize a period other than the car sharing provision period as an owner use period. Conversely, the vehicle provision scheduler 236 could allow the vehicle providing user to set and register an owner use period for each fixed length period on the vehicle provision schedule setting screen. In this case, the vehicle provision scheduler 236 may recognize a period other than the owner use period in the period of the fixed time length as a car sharing provision period. According to new contents set by an input by the user on the vehicle provision plan setting screen, the vehicle provision planner 236 updates information on the vehicle provision plan stored in the storage 230 (vehicle provision plan information 230B). Then, each time the vehicle provision planning information 230B is updated, the vehicle provision scheduler 236 transmits the updated provision planning information 230B or difference data corresponding to the updated portion of the vehicle provision planning information 230B to the car sharing management server 30.At the same time, owner use periods may include, in addition to a period during which the vehicle providing user of the vehicle 10 (the provided vehicle) uses itself, a period during which a person connected to the vehicle providing user, namely, a partner of the vehicle providing user, uses the respectively provided vehicle. This is because a person who is closely connected to the vehicle providing user might have the right to use the vehicle 10 belonging to the vehicle providing user based on an implicit match or specific agreement among the parties. Therefore, in the vehicle provision planning information 230B, in the storage 230, each owner use period may be registered in the form of designating a specific user (the vehicle providing users or a specific partner of the vehicle providing user) or in a form classified as a use period of the vehicle providing user or a use period of the partner of the vehicle providing user. Thereby, the car sharing management server 30 (the controller 23) can recognize the users for the respective owner use periods.Note that it may be set that a period to be used by a partner of the vehicle providing user among the owner use periods is registered by the mobile terminal 20 of the partner of the vehicle providing user, for example, according to permission of the vehicle providing user by a user terminal such as the mobile terminal 20A. In this case, the mobile terminal 20 (the controller 23) of the vehicle providing user may have substantially the same functions as those in the vehicle provision scheduler 236 as in the mobile terminal 20A. Also, registration setting of a car-sharing provision period or an owner use period of the vehicle 10 may be performed on a user terminal other than the mobile terminal 20A (e.g., a laptop or desktop type computer terminal used by the vehicle-providing user at home or a dedicated terminal in a store or the like of the company providing the C2C car-sharing service).<Konfiguration of Car Sharing Management Server>The car sharing management server 30 includes a communicator 31 and a controller 32.The communicator 31 is a device for bidirectionally communicating with external devices such as the mobile terminal 20 and the vehicle management server 40 through a predetermined communication network.The controller 32 performs various control processes in the car sharing management server 30. The controller 32 may be configured with one or more server computers each including, for example, a CPU, a RAM, a ROM, a non-volatile auxiliary storage device, an RTC, various interfaces for communication, and the like. The same applies to the controller 42, which will be described later, of the vehicle management server 40. The controller 32 includes, for example, an inter-user terminal communication interface (hereinafter referred to as the "inter-user terminal communication interface") 321, an inter-server communication interface (hereinafter referred to as the "inter-server communication interface") 322, a scheduling manager 323, an authentication key manager 324, and a vehicle use monitoring unit 325 as functional units implemented by executing one or more programs stored in a ROM, a non-volatile auxiliary storage device, or the like on the CPU. The controller 32 also includes, for example, a memory 320 as a storage area defined in an auxiliary nonvolatile storage device, an external storage device connected to a server computer, or a server computer, or the like.In the storage 320 (a first storage and a second storage), a vehicle planning information database 320A, a parking station planning information database 320B, an authentication key information database 320C, a registered vehicle base information database 320D, a registered station base information database 320E, and a registered user information database 320F are constructed.The vehicle planning information database 320A stores information (vehicle planning information) on the usage plan for each of the plurality of vehicles 10 registered in the C2C car sharing in a form that the information for each vehicle 10 can be extracted. Also, the vehicle planning information database 320A is linked to the parking station planning information database 320B to integrate information on the parking station at the departure location according to a use reservation for a vehicle 10 and the parking station as the return location. The vehicle planning information database 320A is also linked to the registration vehicle base information database 320D, and is configured to be capable of extracting the vehicle planning information with extraction conditions with respect to the base information about each registered vehicle 10 (for example, identification information such as a vehicle ID, vehicle location, seat capacity, manual transmission, or automatic transmission, and so on of the vehicle 10, which will be hereinafter referred to as the "registered vehicle base information" and "base information of the registered vehicles", respectively). The vehicle planning information database 320A is also linked to the registration user information database 320F, and is configured to extract, for example, vehicle planning information including use reservations for each registered user.The parking station planning information database 320B stores information (parking station planning information) on use plans for each of the plurality of parking stations registered in the C2C car sharing in a form that use plans for each parking station can be extracted. The parking station planning information database 320B is also linked to the vehicle planning information database 320A to integrate information on a parked vehicle 10 according to usage planning of a parking station. The parking station planning information database 320B is also linked to the registration station base information database 320E, and is configured to be capable of extracting parking station planning information having extraction conditions with respect to the base information for each of the plurality of registered parking stations (for example, identification information such as a station ID, position information, a kind among a dedicated parking station provided by the owner / a shared parking station provided by the owner / a parking station provided by a company, etc., from each parking station, which will be hereinafter referred to as the "registered station base information" and "registered station base information", respectively). The parking station planning information database 320B is also linked to the registration user information database 320F, and is configured to be capable of extracting, for example, parking station information including usage reservations for parking stations for each registered user.Note that the vehicle planning information database 320A and the parking station planning information database 320B may be integrated into a single database in which use reservations of a vehicle 10 to be used and a parking station may be registered integrated as the return location of the vehicle 10. In other words, the vehicle planning information and the parking station planning information may be stored in the same memory or may be stored in separate memories.The authentication key information database 320C stores authentication key information including an authentication key and its pending information obtained from the vehicle management server 40 (e.g., information for identifying the corresponding vehicle 10 (the key unit), identification information of the user such as a user ID corresponding to the mobile terminal 20 as the delivery destination, and so on). The authentication key information database 320C is linked to the vehicle planning information database 320A, and is configured to be capable of extracting authentication key information having extraction conditions about a specific vehicle 10 and / or a use reservation of the specific vehicle 10 or the like. The authentication key information database 320C is also linked to the registration user information database 320F, and is configured to be capable of extracting, for example, authentication key information for each registered user.The registration vehicle base information database 320D stores registered vehicle base information for each of the plurality of vehicles 10 registered in the C2C car sharing in a form that the information for each vehicle 10 can be extracted. The registration station base information database 320E stores registered station base information for each of the plurality of base stations registered in the C2C car sharing in a form that the information for each parking station can be extracted.The registration user information database 320F stores basic information for each of the plurality of users registered in the C2C car sharing in a form that the information for each user can be extracted (for example, identification information such as a user ID, name, address, type of the user such as vehicle-providing user, partner of a vehicle-providing user or general user, own vehicle in the case of a vehicle-providing user or a partner of the vehicle-providing user, etc., which will be referred to as the "user information" hereinafter).The inter-user terminal communication interface 321 bidirectionally transmits and receives various signals with a user terminal such as the mobile terminal 20 using the communicator 31. the scheduling manager 323 and the authentication key manager 324, and the like exchange signals with the mobile terminal 20 via the inter-user terminal communication interface 312.The intermediate server communication interface 322 bidirectionally transmits and receives various signals with the vehicle management server 40 using the communicator 31. the authentication key manager 324 and the vehicle use monitoring unit 325 and the like exchange signals with the vehicle management server 40 via the intermediate server communication interface 322.The planning manager 323 (an example of a reservation processor) manages the usage plan for each vehicle 10 and the usage plan for each parking station.In response to a request (reservation candidate acquisition request) from a user terminal such as the mobile terminal 20, the planning manager 323 responds with information on available vehicles and returnable parking stations that satisfy the desired conditions (e.g., desired use period, departure location, destination location, vehicle type, number of occupants, etc.) to the user terminal. For example, based on the vehicle planning information database 320A and the parking station planning information database 320B, the planning manager 323 extracts available vehicles 10 in the vicinity of the desired departure location during the desired use period that satisfy the desired vehicle type, the number of occupants, and the like; and a parking station where the vehicle 10 is located. Also, based on the vehicle planning information database 320A and the parking station planning information database 320B, the planning manager 323 may extract states from other parking stations in the vicinity of the departure location (for example, states corresponding to icons 3002 to 3005 in FIG. 3 described above). Also, based on the vehicle planning information database 320A and the parking station planning information database 320B, the planning manager 323 may extract a parking station to which the vehicle 10 can be returned in the vicinity of the destination as the desired condition within the desired use period. Also, based on the vehicle planning information database 320A and the parking station planning information database 320B, the planning manager 323 could extract states from other parking stations in the vicinity of the destination (for example, states corresponding to icons 3001, 3003, and 3005 in FIG. 3 as described above). Then, the planning manager 323 responds with the information extracted from the vehicle planning information database 320A and the parking station planning information database 320B (the information on candidate vehicles 10 and candidate parking stations as the return location) to the mobile terminal 20 based on the desired conditions.It should be noted that the range of the return location for use for a simple travel route could be limited for each vehicle 10. This is because if the return location is too far from the home location of the vehicle 10, there is a probability that the vehicle 10 cannot be returned to its home location. This is also because, since the range of activity may be different for each vehicle providing user, an area that can be covered when a vehicle 10 is fetched for use for a simple travel route may be different from one vehicle providing user to another along with a disposal such as a shuttle. In this case, the range of a return place when used for a simple travel route for each vehicle 10 may be defined according to contract conditions or the like between the company providing the C2C car sharing and the vehicle providing user. Specifically, when extracting available vehicles 10 in the vicinity of a departure place during a desired use period, the planning manager 323 may extract a vehicle 10 having no restrictions on the return place for a simple travel route use or a vehicle 10 whose restricted area for a simple travel route use covers the destination. Also, when available vehicles 10 are extracted in the vicinity of a departure location during a desired use period when a vehicle 10 is parked at a parking station other than the home location, the planning manager 323 may extract the vehicle 10 only when the destination is in a direction approaching the home location. Also, when available vehicles 10 are extracted in the vicinity of a departure location during a desired use period when a vehicle 10 is parked at a parking station other than the home location, the planning manager 323 may extract the vehicle 10 only when the destination location is within a predetermined distance (e.g., 5 km) from the home location. Thereby, when the vehicle 10 has been brought to a parking station other than the home location by a simple travel route use, it is possible to prevent the vehicle 10 from getting a place very far from the home location by a repeated simple travel route use.Also, in response to a use reservation request received from a user terminal such as the mobile terminal 20, the planning manager 323 updates the vehicle planning information database 320A and the parking station planning information database 320B based on the user ID, the vehicle ID, the parking station at the departure location, the parking station at the return location, the use period (the use start date and time, and the use end date and time) that can be identified in the use reservation request. Specifically, the planning manager 323 additionally sets the use reservation for the vehicle 10 including the use period; the user ID; and the parking stations corresponding to the departure location and the destination location that can be identified in the use reservation request, in the vehicle planning information about the vehicle 10 corresponding to the vehicle ID identified in the use reservation request. Also, the planning manager 323 also additionally sets the use reservation including the use period, the user ID, and the like identified in the use reservation request in the parking station planning information corresponding to the parking station as the return location identified in the use reservation request. Thereby, the use of the vehicle 10 during the use period is confirmed by the user corresponding to the user terminal as the transmission source of the use reservation request. Also, after a parking station corresponding to the departure location is registered after a use reservation, it is possible to manage operations of the vehicle 10, such as preventing the vehicle 10 corresponding to the use reservation from getting to another parking station due to a use for a simple travel route. Also, after a parking station corresponding to the departure location is registered after use registration, it is possible to manage operations of the vehicle 10 and the parking station to prevent the parking station corresponding to the destination location from being used as a return location of another vehicle 10 before the use period.Also, the planning manager 323 updates the vehicle planning information regarding the corresponding vehicle 10 in the vehicle planning information database 320A based on the vehicle provision planning information or the difference data corresponding to the updated portion received from a user terminal such as the mobile terminal 20. Specifically, the planning manager 323 updates a car sharing provision period and an owner use period during a new (future) period of a fixed time length in the vehicle planning information. Thereby, the scheduling manager 323 can receive a use reservation for the vehicle 10 in the car sharing provision period by the reservation unit 233 of the mobile terminal 20 or the like.Also, based on the vehicle provision planning information or the difference data corresponding to the updated section, the planning manager 323 automatically makes a reservation for a spare vehicle for the vehicle providing user or a partner of the vehicle providing user (a vehicle 10 other than the own vehicle) and a parking station as the return location during an owner use period. This is because, as described above, since it is possible to use the vehicle 10 for a simple travel route, there is a possibility that the vehicle 10 has not been returned to the home location within the owner use period. Specifically, based on the updated vehicle planning information database 320A and the parking station planning information database 320B, for each of the latest one or more registered owner use periods, by setting the home location of the vehicle belonging to the vehicle providing user as the departure location and the destination location, the planning manager 323 extracts available vehicles 10 and available parking stations to be used as the return location in the vicinity of the departure location and the destination location (i.e., the home location). The planning manager 323 selects a vehicle 10 and a parking station among the extracted vehicles 10 and the parking stations as the return location according to the predetermined conditions (e.g., the closest to the home location, the same seating capacity, kind, etc. as those of the own vehicle, etc.). Then, the planning manager 323 additionally sets a use reservation for the selected vehicle 10 and the selected parking station in the vehicle planning information and the parking station planning information corresponding to the selected vehicle 10 and the selected parking station as the return location corresponding to each of the owner use periods. Thereby, the car sharing management server 30 can secure a spare vehicle for the vehicle providing user or the partner of the vehicle providing user during each of the owner use periods.Alternatively, for each of the latest one or more registered owner use periods, not limited to setting the home location as the departure location and the destination location, the management server 323 may make a use reservation for a replacement vehicle and a parking station as the return location corresponding to a departure location and a destination location according to the desires of the vehicle providing user. For example, when a registration setting of the vehicle provision plan (owner use periods) is made on the user terminal (e.g., the mobile terminal 20A) as described above, the vehicle providing user may specify the departure location and the destination location of the spare vehicle for each of the owner use periods. Thereby, the planning manager 323 can make a use reservation for a spare vehicle and a parking station as the return location corresponding to the specified departure location and return location for each of the at least one or more registered owner use periods. Also, the vehicle providing user may register in advance a departure location and a use reservation destination for a spare vehicle and a parking station as the return location with reference to an owner use period in the car sharing management server 30 (the controller 33) by a user terminal (e.g., a mobile terminal 20A). Thereby, the planning manager 323 can make a use reservation for a spare vehicle and a parking station as the return location corresponding to the return location and the departure location registered in advance for each of the last one or more registered user use periods. Therefore, by specifying a departure place and a destination place in advance, or when the vehicle provision plan is set and registered, a replacement vehicle and a parking station can be provided as the return place for their / their convenience to the vehicle providing user or the partner of the vehicle providing user. Therefore, the car sharing management server 30 can improve convenience for the vehicle providing user and the partner of the vehicle providing user.At the same time, the planning manager 323 may prioritize the use reservation of the spare vehicle for the vehicle providing user or the partner of the vehicle providing user during the owner providing period via a use reservation for a vehicle 10 from a user terminal. For example, even if the vehicle planning information database 320A corresponding to the periods of a fixed time length in the future are all updated based on the vehicle provision planning information or the difference data corresponding to the updated section, the planning manager 323 does not immediately receive a use reservation from a user terminal with respect to any of the updated last car sharing provision periods, but first makes a use reservation for a spare vehicle for the vehicle providing user or the partner of the vehicle providing user. Thereby, the car sharing management server 30 can make a use reservation for a spare vehicle for the vehicle providing user or the partner of the vehicle providing user before candidate vehicles 10 and candidate parking stations decrease as the return location due to use reservations of user terminals. Therefore, the car sharing management server 30 can more securely ensure a spare vehicle for the vehicle providing user or the partner of the vehicle providing user during an owner use period.Note that the scheduling manager 323 does not need to ensure a spare vehicle for each of the last registered owner use periods. Also, the scheduling manager 323 could ensure spare vehicles for only some periods among the owner use periods. In this case, for example, when owner use periods are set and registered on a user terminal as described above, the user may set a need or non-necessity of a spare vehicle and hours during which a spare vehicle is required for each registration period of the own vehicle to reflect contents of these settings in the vehicle provision planning information 230B. Thereby, the planning manager 323 can recognize the need or non-necessity of a spare vehicle and the hours during which a spare vehicle is required, based on the updated vehicle provision planning information received from the user terminal.Also, in response to a request from a user terminal (e.g., the mobile terminal 20A) of the vehicle providing user, the planning manager 323 may change the use reservation for either one of the spare vehicle or the parking station as the return location for each owner use period registered in the vehicle planning information. For example, in response to a request from a user terminal of the vehicle providing user, the planning manager 323 may change the spare vehicle registered for the use reservation to a specific owner use period located at a parking station in the vicinity of the home location of the own vehicle during the period to a spare vehicle located at a parking station in the vicinity of the departure location other than the home location of the own vehicle during the period. Also, for example, in response to a request from a user terminal of the vehicle providing user, the scheduling manager 323 may change the parking station registered for the use reservation with respect to a certain owner use period at which the spare vehicle in the vicinity of the home location of the own vehicle can be returned during the period to a parking station in the vicinity of the destination other than the home location of the own vehicle during the period. Thereby, in the case where use reservation is made automatically for a spare vehicle having the home location of the own vehicle as the departure location and the destination location and for a parking station as the return location, when it is desired to change at least one of the departure location and the destination location, the use reservation for the spare vehicle and the parking station as the return location can be changed accordingly for the vehicle providing user or the partner of the vehicle providing user. Therefore, the car sharing management server 30 can improve convenience for the vehicle providing user.Note that, as described above, when a use reservation for a spare vehicle corresponding to the destination and the departure location and a parking station as the return location for this is automatically made according to desires of the vehicle providing user, the planning manager 323 may of course change the use reservations for either one of the spare vehicle or the parking station as the return location for each owner use period registered in the vehicle planning information or the use reservation in response to a request from a user terminal (e.g., the mobile terminal 20A) of the vehicle providing user. Thereby, similarly, the car sharing management server 30 can improve convenience for the vehicle providing user.The authentication key manager 324 (an example of a key information supply unit) acquires, from the vehicle management server 40, an authentication key of a vehicle 10 during a use period corresponding to a use reservation registered in the vehicle planning information database 320A and the parking station planning information database 320B. At the same time, as described above, use reservations to be processed include a use reservation received from a user terminal (e.g., the mobile terminal 20) and, in addition, a use reservation for a spare vehicle and the like with respect to a period for a vehicle providing user or a partner of a vehicle providing user to use the provided vehicle (owner providing period). Specifically, the authentication key manager 324 transmits, to the vehicle management server 40, an authentication key output request including a vehicle ID corresponding to the vehicle 10, a user ID corresponding to the user using the vehicle 10, a use period identified in the use reservation, and the like. Simultaneously, in the case of use reservation with respect to a period for a vehicle providing user partner to use a provided vehicle, an authentication key output request including a user ID corresponding to the specific vehicle providing user partner that can be specified when registration setting of the vehicle provision plan is made by the vehicle providing user on a user terminal is transmitted. For example, when the latest use reservation is registered in the vehicle planning information database 320A and the parking station planning information database 320B by the planning manager 323, the authentication key manager 324 transmits an authentication key output request to the vehicle management server 40. Also, when the authentication key acquisition request is received from the mobile terminal 20, the authentication key manager 324 may transmit an authentication key output request to the vehicle management server 40. Thereby, the authentication key manager 324 can obtain (receive) an authentication key output by the vehicle management server 40 in response to the authentication key output request from the vehicle management server 40. The authentication key manager 324 transmits the obtained authentication key information including an authentication key to the mobile terminal 20 of the target user. Also, the authentication key manager 324 registers the obtained authentication key information in the authentication key information database 320C. Thereby, the car sharing management server 30 can handle a case where a time difference is provided between the time for obtaining an authentication key from the vehicle management server 40 and the time for supplying the authentication key to the mobile terminal 20, and a case where the authentication key needs to be repeatedly supplied for the same reason.Note that authentication key information corresponding to an authentication key that has already been used (in other words, that has been supplied to the mobile terminal 20 and whose use period has elapsed) can be appropriately deleted from the authentication key information database 320C.The vehicle use monitoring unit 325 monitors the use status from the start to the end of use of a vehicle 10 by a user in the C2C car sharing.The vehicle use monitoring unit 325 monitors whether or not the vehicle 10 has been appropriately returned to the parking station as the return location within the use period of the vehicle 10. Specifically, the vehicle use monitoring unit 325 may output a request for the position information about the own vehicle 10 to the vehicle management server 40, for example, when a predetermined time has passed before the use end date and time. Thereby, the vehicle use monitoring unit 325 can recognize where the vehicle 10 is located based on the position information about the vehicle 10 returned from the vehicle management server 40. Therefore, the vehicle use monitoring unit 325 can monitor whether or not it is possible for the vehicle 10 to reach the parking station as the return location at the use end date and time. For example, the vehicle use monitoring unit 325 may transmit an alarm to the mobile terminal 20 of the corresponding user in a situation where the vehicle 10 is relatively far from the parking station as the return location even though the predetermined time has elapsed before the use end date and time. Thereby, the car sharing management server 30 can prompt the user to travel to the parking station as the return location. Then, upon receiving the use completion notice (which will be described later) transmitted from the mobile terminal 20 as a response to an operation performed by the user, the vehicle use monitoring unit 325 determines that the vehicle 10 has been returned to the parking station corresponding to the valid return location to finish monitoring the use status of the vehicle 10 with respect to the corresponding use reservation.Note that the vehicle use monitoring unit 325 may determine whether or not the vehicle 10 has been returned to the valid parking station instead of the mobile terminal 20. In this case, the vehicle use monitoring unit 325 outputs a request about the position information to the vehicle management server in response to receiving the use completion notification from the mobile terminal 20. Therefore, when the vehicle 10 is not returned at the valid parking station, the vehicle use monitoring unit 325 may issue an alarm to the mobile terminal 20 of the corresponding user. Thereby, the car sharing management server 30 can prompt the user to return to the correct parking station.<Konfiguration of Vehicle Management Server>The vehicle management server 40 includes a communicator 41 and a controller 42.The communicator 41 is a device for bidirectionally communicating with external devices such as the vehicle 10 and the car sharing management server 30 via a predetermined communication network.The controller 42 performs various control processes in the vehicle management server 40. As functional units obtained by executing one or more programs stored in the ROM or the nonvolatile auxiliary storage device on the CPU, the controller 42 includes, for example, an inter-vehicle communication interface (hereinafter referred to as an "inter-vehicle communication interface") 421, an inter-server communication interface (hereinafter referred to as an "inter-server communication interface") 422, a vehicle manager 423, and an authentication key issuer 424. The controller 42 also includes, for example, a memory 420 as a storage area defined in an auxiliary nonvolatile storage device, an external storage device connected to a server computer, or the like.In the memory 420, a vehicle information database 420A is constructed.The vehicle information database 420A stores vehicle information uploaded from a plurality of vehicles 10 (e.g., position information about the vehicles 10) in a form that the information for each vehicle 10 can be extracted.Among the vehicle information items in the vehicle information database 420A, an information item including a period of a certain length of elapsed time since the upload from the vehicle 10 could be appropriately deleted.The inter-vehicle communication interface 421 bidirectionally transmits and receives various signals with each of the plurality of vehicles 10 using the communicator 41. the vehicle manager 423 and the like exchange signals with the vehicles 10 via the inter-vehicle communication interface 421.The intermediate server communication interface 422 bidirectionally transmits and receives various signals with the car sharing management server 30 using the communicator 41. the vehicle manager 423, the authentication key outputter 424, and the like exchange signals with the car sharing management server 30 via the intermediate server communication interface 422.The vehicle manager 423 obtains the vehicle information of each of the plurality of vehicles 10 and, based on the newly obtained vehicle information, updates the vehicle information of each vehicle 10 in the vehicle information database 420A. The vehicle information about the vehicle 10 may be automatically uploaded from the vehicle 10 to the vehicle management server 40, for example, according to a schedule set in advance, or may be uploaded from the vehicle 10 to the vehicle management server 40 in response to an instruction appropriately transmitted from the vehicle management server 40 to the vehicle 10. In the latter case, the vehicle manager 423 transmits a transmission instruction of vehicle information (e.g., the position information about the vehicle 10) to the vehicle 10 in response to a request from the car sharing management server 30, a schedule set in advance, or the like.Also, in response to a request from the car sharing management server 30, the vehicle manager 423 extracts the latest position information about the vehicle 10 from the vehicle information database 420A or transmits a transmission instruction to the vehicle 10 to upload the latest position information. Then, the vehicle manager 423 transmits (responds with) the latest position information about the vehicle 10 to the car sharing management server 30.When the authentication key output request is received from the car sharing management server 30, the authentication key outputter 424 generates a time-limited authentication key corresponding to the vehicle 10 (specifically, the key unit 12 of the vehicle 10) based on the vehicle 10 and the use period identified in the authentication key output request. Then, the authentication key issuer 424 transmits authentication key information including the issued authentication key to the car sharing management server 30. At the same time, the authentication key information includes information for the mobile terminal 20 to search for the key unit of the vehicle 10 (e.g., a service UUID or the like included in an advertisement packet from the communicator 123 of the key unit 12, which will be referred to as "BLE connection information" hereinafter). Thereby, by obtaining the authentication key information via the car sharing management server 30, the mobile terminal 20 (the controller 23) can acquire the advertising packet from the key unit 12 of the vehicle 10 corresponding to the authentication key. Also, the authentication key outputter 424 transmits the output authentication key to the corresponding vehicle 10.[Specific Example of Operations of Car Sharing System ( 1)]Next, an example of specific operations of the car sharing system 1 will be described with reference to FIGS. 4A and 4B.FIGS. 4A and 4B are flowcharts schematically illustrating an example of operations of the car sharing system 1. Specifically, FIG. 4A is a flowchart schematically illustrating an example of operations starting from receiving a use reservation for a vehicle 10 from a user terminal (mobile terminal 20) until supplying an authentication key to the user's mobile terminal 20. FIG. 4B is a flowchart schematically illustrating an example of operations from a start of the use of the vehicle 10 by the user to return the vehicle 10 after the use.Note that in FIG. 4B, steps S 130 to S 148 are operations of the car sharing system 1 (the vehicle 10 and the mobile terminal 20) when the use of the vehicle 10 is started, and steps S 150 to S 146 are operations when the use of the vehicle 10 is ended (when it is returned).<Operations after Reservation of Use of Vehicle by User>As illustrated in FIG. 4A, in step S 102, the mobile terminal 20 (the controller 23) activates the car sharing application in response to an operation performed by the user through a touch panel or the like, and transmits a login request including the user ID and a password input by the user to the car sharing management server 30.In step S 104, the car sharing management server 30 (the controller 32) performs an authentication process based on the user ID and the password, and responds, after successful authentication, with a response of the successful authentication to the mobile terminal 20, thereby displaying an application screen of the car sharing application on the display 25 of the mobile terminal 20.In step S 106, the mobile terminal 20 (the reservation unit 233) transmits a reservation candidate acquisition request including desired conditions (for example, departure place, destination place, use period, etc.) input on a use reservation screen to the car sharing management server 30 in response to an operation performed by the user.In step S 108, the car sharing management server 30 (the planning manager 323) responds with information on candidate vehicles 10 available in the environment of the departure location in the desired use period to the mobile terminal 20 according to the desired conditions. Thereby, a vehicle selection screen including available vehicles 10 in the vicinity of the departure place is displayed on the display 25 of the mobile terminal 20 (see FIG. 3 ).In step S 110, in response to an operation by the user to select a vehicle 10 from among the candidates, the mobile terminal 20 (the reservation unit 233) transmits information on the selected vehicle 10 and the parking stations at the departure location to the car sharing management server 30.In step S 112, the car sharing management server 30 (the planning manager 323) responds with information on candidate parking stations available within the desired use period in the vicinity of the destination according to the desired conditions (at which the vehicle 10 can be returned) to the mobile terminal 20, thereby displaying a return location selection screen including available parking stations in the vicinity of the destination on the display 20 of the mobile terminal 20 (see FIG. 3 ).In step S 114, in response to an operation performed by the user to select a parking station from among the candidates, the mobile terminal (reservation unit 233) transmits information on the selected parking station to the car sharing management server 30.In step S 116, the car sharing management server 30 (the planning manager 323) registers a use reservation for the vehicle 10 and the parking station including a desired use period, the selected vehicle 10, the parking station at the departure location, the parking station at the destination location (return location), and the like.In step S118, after completion of the registration of the use reservation, the car sharing management server 30 (the scheduling manager 323) transmits a reservation completion notice to the mobile terminal 20.Also, after ending the registration of the use reservation, in step S 120, the car sharing management server 30 (the authentication key manager 324) transmits an authentication key output request to the vehicle management server 40.In response to the authentication key output request from the car sharing management server 30, the vehicle management server 40 (the authentication key outputter 424) outputs a time-limited authentication key corresponding to the vehicle 10 identified in the authentication key output request in step S122.In step S 124, the vehicle management server 40 (the authentication key outputter 424) transmits authentication key information including the authentication key that is output to the car sharing management server 30.Also, in step S 126, the vehicle management server 40 (the authentication key outputter 424) transmits the output authentication key to the corresponding vehicle 10.In response to receiving the authentication key from the vehicle management server 40, the car sharing management server 30 (the authentication key manager 324) transmits the authentication key information including the authentication key to the user's mobile terminal 20 corresponding to the authentication key.<Operations when starting use of the vehicle>As illustrated in FIG. 4B, in response to an operation performed by the user on the car sharing application screen, or when a predetermined time has elapsed before the use start date and time of the vehicle 10, the mobile terminal 20 (the inter-vehicle communication interface 231) starts searching for the key unit 12 in step S 132. Specifically, based on the BLE connection information included in the authentication key information received from the car sharing management server 30, the inter-vehicle communication interface 231 attempts to acquire an advertisement packet from the key unit 12 within the communication range of the communicator 21.In step S 132, the vehicle 10 (the key unit 12) transmits the advertising information toward a predetermined communication range in the vicinity of the key unit 12 (in the vicinity of the vehicle 10).The transmission of the advertising information by the key unit 12 of the vehicle 10 is periodically repeated as described above.In step S 134, the mobile terminal 20 (the inter-vehicle communication interface 231) acquires the key unit 12 by receiving the advertising information from the key unit 12 and transmits an authentication request to the acquired key unit 12.In response to the connection request from the mobile terminal 20, the vehicle 10 (the key unit 12) establishes a session of BLE communication with the mobile terminal 20 and transmits a connection response to the mobile terminal 20 in step S136.Once the session of BLE communication with the key unit 12 has been established, the mobile terminal 20 (the vehicle operation unit 235) transmits an authentication request including the authentication key to the key unit 12 in step S 138.In step S 140, in response to receiving the authentication request from the mobile terminal 20, the vehicle 10 (the key unit 12) performs an authentication process based on the authentication key included in the authentication request.When the authentication succeeds, the vehicle 10 (the key unit 12) turns on a locking / unlocking function of the key unit 12 in step S 142.In step S 144, the vehicle 10 (the key unit 12) transmits a locking / unlocking function-to message to the mobile terminal 20.In step S 146, in response to an unlocking operation performed by the user, the mobile terminal 20 (the vehicle operation unit 235) transmits an unlocking request to the key unit 12.In step S 148, in response to receiving the unlocking request from the mobile terminal 20, the vehicle 10 (the key unit 12 and the locking / unlocking / activating unit 11) unlocks the door. This allows the user to enter the front seat of the vehicle 10, activate the vehicle 10, and start use of the vehicle 10.<Operations at Ending Use (at Returning) of Vehicle>In step S 150, in response to a locking operation performed by the user, the mobile terminal 20 (the vehicle operation unit 235) transmits a locking request to the key unit 12.In step S 152, in response to receiving the lock request from the mobile terminal 20, the vehicle 10 (the key unit 12 and the lock / unlock / activation unit 11) locks the door.In step S 154, in response to an operation performed by the user on the application screen of the car sharing application that is activated, the mobile terminal 20 (the controller 23) displays an operation screen for transmitting a notification of the end of use of the vehicle 10 to the car sharing management server 30 (hereinafter, referred to as the "Verwendungsbeendigungsoperationsbildschirm"). Then, the mobile terminal 20 (the controller 23) receives an operation (hereinafter referred to as the "use ending operation") indicating the end of use of the vehicle 10 by the user on the Verwendungsbeendigungsoperationsbildschirm.In step S 156, the mobile terminal 20 (the controller 23) determines whether or not the vehicle 10 has been returned to the parking station as the valid return location based on the position information in the GNSS module 24 (the position information about the mobile terminal 20). The position information and the like of the parking station as the return location may be obtained (received) from the car sharing management server 30 in a form included in the authentication key information. Specifically, when a difference between the position information about the mobile terminal 20 and the position information about the parking station as the return location is within a predetermined range, the mobile terminal 20 (the controller 23) may determine that the vehicle 10 has been returned to the valid return location.In step S 158, when it is determined that the vehicle 10 has been returned to the parking station as the valid return location, the mobile terminal 20 (the controller 23) sets the authentication key (the authentication key information 230A) stored in the storage 230 to a unusable state, that is, invalidates the key. For example, the mobile terminal 20 (the controller 23) deletes the authentication key in the memory 230.In step S 160, the mobile terminal 20 (the intermediate server communication interface 232) transmits a use completion notification to the car sharing management server 30.In step S 162, in response to receiving the use completion notification of the vehicle 10 from the mobile terminal 20, the car-sharing management server 30 (the vehicle use monitoring unit 325) confirms the end of use of the vehicle 10 and stops monitoring of the vehicle 10, and then the car-sharing management server 30 (the vehicle use monitoring unit 325) transmits (transfers) the use completion notification of the vehicle 10 to the vehicle management server 40.In step S 164, in response to receiving the use completion notification of the vehicle 10 from the car sharing management server 30, the vehicle management server 40 (the controller 42) refers to a history of the authentication keys output by the authentication key outputrs 424 to identify the authentication key, and transmits to the vehicle 10 an authentication key invalid instruction including information about the identified authentication key.In step S16, in response to receiving the authentication key invalid instruction, the vehicle 10 (the key unit 12) invalidates (e.g., deletes) the authentication key concerned. This ends a series of operations of the car sharing system 1 with respect to a specific use reservation for a vehicle 10.[Specific Example of Operations of Car Sharing System ( 2)]Next, another example of specific operations of the car sharing system 1 will be described with reference to FIG. 5.FIG. 5 is a flowchart schematically illustrating another example of operations of the car sharing system 1. Specifically, FIG. 5 is a flowchart illustrating schematic operations of the car sharing system 1 starting registration of a vehicle provision plan by a vehicle providing user until start of use of a spare vehicle by the vehicle providing user.Note that in this example (in steps S224 and S226), it is assumed that when the vehicle providing user wants to use an own vehicle, the own vehicle is not present at the home location.<Operation of Registering Vehicle Delivery Plan>Steps S 202 and S 204 are substantially the same as the processes in steps S 102 and S 104 in FIG. 4A, and thus the description is omitted.In step S 206, in response to an operation performed by the vehicle providing user, the mobile terminal 20A (the vehicle provision scheduler 236) registers a vehicle provision schedule for a fixed length period in the future, and updates the vehicle provision schedule information 230B in the storage 230.In step S 208, the mobile terminal 20A (the vehicle provision scheduler 236) transmits the latest vehicle provision schedule, specifically, the updated vehicle provision schedule information or difference data corresponding to the updated section to the car sharing management server 30.In step S 210, the car sharing management server 30 (the planning manager 323) updates the vehicle planning information corresponding to the vehicle 10 in the vehicle planning information database 320A.In step S 212, the car sharing management server 30 (the planning manager 323) makes use reservation for another vehicle 10 (a spare vehicle) and for a parking station as the return location with respect to an owner use period. Thereby, as described above, even if the own vehicle of the vehicle providing user has not been returned at the home location within the owner use period, the vehicle providing user can use the other vehicle 10 (the spare vehicle) parked in a parking station near the home location of the own vehicle.After completion of the use reservation of the spare vehicle during the owner use period, the scheduling manager 323 transmits a spare vehicle establishment notification to the mobile terminal 20A of the vehicle providing user in step S 214. Thereby, the vehicle providing user can confirm information on the use reservation for the spare vehicle (e.g., information on the parking station where the vehicle 10 is parked) on a predetermined application screen of the car sharing application displayed on the display 25 of the mobile terminal 20A.Also, after completion of the use reservation of the spare vehicle for the vehicle providing user, the car sharing management server 30 (the authentication key manager 324) transmits an authentication key output request to the vehicle management server 40.In step S 218, in response to receiving the authentication key output request, the vehicle management server 40 (the authentication key outputter 424) outputs a time-limited authentication key of the vehicle 10 corresponding to the spare vehicle.In step S220, the vehicle management server 40 (the authentication key issuer 424) transmits authentication key information including the issued authentication key to the car sharing management server 30.In step S222, the vehicle management server 40 (the authentication key outputter 424) also transmits the authentication key information including the output authentication key to the vehicle 10.<Operations when the vehicle-providing user starts use of the spare vehicle>In step S 224, in response to an operation performed by the vehicle providing user who has confirmed that the own vehicle is not parked in a parking space (parking station) at the home location, the mobile terminal 20A (the authentication key acquirer 234) transmits an authentication key acquisition request for the spare vehicle to the car sharing management server 30.In step S226, the car sharing management server 30 (the authentication key manager 324) extracts authentication key information corresponding to the spare vehicle from the authentication key information database 320C and transmits (responds with) the authentication key information to the mobile terminal 20A. Thereby, by a series of operations of the car sharing system 1, similar to steps S 130 to S 160 in FIG. 4B described above, the vehicle providing user can use the spare vehicle and return the spare vehicle to the parking station as a return location.[Effects of Embodiments]As described above, in the present embodiment, the car sharing system 1 performs operations on a C2C car sharing in which a plurality of vehicles 10 including at least a private ownership vehicle and a corporate ownership vehicle are shared among users, and the system is operated by a company different from a company providing a corporate ownership vehicle. Specifically, based on the vehicle planning information in the vehicle planning information database 320A and the parking station planning information in the parking station planning information database 320B, the planning manager 323 receives, from a user through a user terminal, a use reservation for a vehicle 10 from among the plurality of vehicles 10 available at a parking station in the vicinity of a departure location of the user during a period desired by the user and for a parking station from among the plurality of parking stations located in the vicinity of a destination location of the vehicle at which the vehicle 10 can be returned at a time desired by the user, to register the usage reservation in the vehicle planning information in the vehicle planning information database 320A and the parking station planning information in the parking station planning information database 320B. The authentication key manager 324 supplies key information for use of the vehicle 10 corresponding to the use reservation registered in the vehicle planning information to a mobile terminal 20 of the user corresponding to the use reservation. Also, the planning manager 323 makes a use reservation with respect to a period registered in the vehicle planning information for an owner of the vehicle 10 or a person connected to the owner to use the vehicle 10, for another vehicle 10 (a spare vehicle) other than the vehicle 10 among the plurality of vehicles 10 available during the period, and for a corresponding parking station among the plurality of parking stations to which the spare vehicle can be returned within the period; and registers the use reservation in the vehicle planning information in the vehicle planning information database 320A and the parking station planning information in the parking station planning information database 320B. Then, the authentication key manager 324 provides key information for using the spare vehicle to a mobile terminal 20 of the owner of the vehicle 10 or the person connected to the owner.In this way, the car sharing system 1 receives a use reservation for a vehicle 10 among a plurality of vehicles 10 including at least a private ownership vehicle and a company ownership vehicle that are located in the vicinity of a departure location of a user during a period desired by the user. Therefore, when a large number of home-owned vehicles and company-owned vehicles are registered, the user can borrow a vehicle 10 in the vicinity of the departure place (for example, the user's home, or the like). Also, the car sharing system 1 receives the usage reservation for one parking station among a plurality of parking stations in the vicinity of the user's destination at which the vehicle 10 can be returned at a time desired by the user. Therefore, by setting a destination other than the departure location, the user can enjoy use for a simple travel route to return the vehicle 10 to a parking station in the vicinity of the destination. Meanwhile, the car sharing system 1 automatically makes a use reservation for a spare vehicle (another vehicle) other than the provided vehicle with respect to a period for an owner of the vehicle 10 provided for sharing or a person connected to the owner (e.g., a family member, a relative, a near friend, etc., of the owner, hereinafter referred to as "the owner or the like") to use the vehicle 10 (the provided vehicle). Therefore, the owner or the like who provides the vehicle in the car sharing service can use the spare vehicle during a period registered in advance for the owner or the like to use the provided vehicle even when the provided vehicle has been brought to a parking station remote from the home location due to use for a simple travel route. As such, the car sharing system 1 realizes provision of a vehicle 10 in the vicinity of a departure location of a user and use for a simple travel route of the vehicle 10 while maintaining convenience for the owner or the like of the vehicle 10, and thus can further improve convenience for the users.Also, in the present embodiment, the planning manager 323 makes the use reservation with respect to the period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle 10, for a vehicle 10 parked at a parking station in the vicinity of a home location of the vehicle as the other vehicle (the spare vehicle), and for a parking station in the vicinity of the home location of the vehicle 10 as the predetermined parking station; and registers the use reservation in the vehicle planning information in the vehicle planning information database 320A and in the parking station planning information in the parking station planning information database 320B.In this way, the car sharing system 1 makes the use reservation for a spare vehicle and a parking station as the return location in a form in which the home location of the provided vehicle is set as the departure location and the destination location with respect to the period for the owner or the like to use the provided vehicle. Therefore, even if the provided vehicle has been brought to a parking station other than the home location due to a use for a simple travel route of the provided vehicle within the period for the owner or the like of the provided vehicle to use the provided vehicle, the owner or the like can use the spare vehicle and return it to a parking station in the vicinity of his / her home.Also, in the above embodiment, in response to a request from a user terminal corresponding to the owner of the vehicle 10 or the person connected to the owner, the planning manager 323 may change the spare vehicle of the use reservation registered in the vehicle planning information in the vehicle planning information database 320A with respect to the period for the owner of the vehicle 10 or the person connected to the owner to use the vehicle 10 to another spare vehicle parked in the parking station in the vicinity of the departure location other than the home location of the vehicle during the period.In this way, in response to a request from a user terminal of the owner or the like of the provided vehicle, the car sharing system 1 changes the spare vehicle of the use reservation with respect to the period for the owner or the like to use the vehicle to another spare vehicle in the parking station in the vicinity of the departure location other than the home location of the provided vehicle. Therefore, since the owner or the like of the provided vehicle can change the departure location of the spare vehicle later, the convenience for the owner or the like of the provided vehicle is improved.Also, in the above-described embodiment, the planning manager 323 may change, in response to a request from a user terminal corresponding to the owner of the vehicle 10 or the person connected to the owner, the predetermined parking station of the use reservation that has been registered in the parking station planning information in the parking station planning information database 320B with respect to the period for the owner of the vehicle or the person connected to the owner to use the vehicle 10, to a parking station in the vicinity of the destination other than the home location of the vehicle.In this way, in response to a request from a user terminal of the owner or the like of the provided vehicle, the car sharing system 1 changes the parking station as the return location of the spare vehicle of the use reservation with respect to the period for the owner or the like to use the vehicle to a parking station in the vicinity of the destination location other than the home location of the provided vehicle. Accordingly, since the owner or the like of the provided vehicle can change the destination of the spare vehicle later, the convenience for the owner or the like of the provided vehicle is improved.Also, in the above embodiment, the planning manager 323 may make the use reservation in response to a request from a user terminal corresponding to the owner of the vehicle 10 or the person connected to the owner with respect to the period registered in the vehicle planning information in the vehicle planning information database 320A for the owner of the vehicle or the person connected to the owner to use the vehicle 10, for a vehicle parked in a parking station in the vicinity of the departure place specified in the request as the spare vehicle, and for a parking station in the vicinity of the destination specified in the request as the predetermined parking station; and registers the use reservation in the vehicle planning information in the vehicle planning information database 320A and in the parking station planning information in the parking station planning information database 320B.In this way, the car sharing system 1 makes use reservation with respect to the period for the owner or the like to use the vehicle for a spare vehicle and a parking station as the return location corresponding to the departure location and the destination specified in the request from a user terminal of the owner or the like to use the provided vehicle. Therefore, when a plan of the provided vehicle is registered by a mobile terminal or the like of him / her by himself, the owner or the like of the provided vehicle can specify the departure place and the destination place for each period for the owner or the like to use the provided vehicle, so that a spare vehicle is provided for him / her for convenience. Therefore, the car sharing system 1 can improve convenience for the owner or the like of the provided vehicle.Also, in the above embodiment, the planning manager 323 may make the use reservation with respect to the period registered in the vehicle planning information for the owner of the vehicle or the person associated with the owner to use the vehicle 10, for a vehicle parked at the parking station in the vicinity of the departure place registered in advance as the spare vehicle and for a parking station in the vicinity of the destination place registered in advance as the predetermined parking station; and registers the use reservation in the vehicle planning information in the vehicle planning information database 320A and in the parking station planning information in the parking station planning information database 320B.In this way, the car sharing system 1 makes the use reservation with respect to the period for the owner or the like to use the provided vehicle for a replacement vehicle and a parking station as the return location corresponding to the departure location and the destination location registered in advance. Therefore, by registering in advance the departure location and the destination of the use reservation with respect to the period for the owner or the like to use the provided vehicle, a spare vehicle is provided for his / her convenience for the owner or the like of the provided vehicle. Therefore, the car sharing system 1 can improve convenience for the owner or the like of the provided vehicle.Also, in the above embodiments, the plurality of parking stations may include parking stations corresponding to home locations of at least some of the plurality of vehicles 10 registered in advance.In this way, as sharing targets, the car sharing system 1 can use not only the provided vehicle but also the home location of the provided vehicle (for example, the parking lot at the owner's home) as a parking station of another provided vehicle. Therefore, when a large number of home-owned vehicles and company-owned vehicles are registered, and thus the home locations of these vehicles dispersed over different places are registered as parking stations, it becomes easier for the user to be provided with a vehicle in the vicinity of the departure location such as the user's home and / or a parking station in the vicinity of the destination. Therefore, the car sharing system 1 can further improve convenience for the user.Also, in the above embodiments, when registering in the vehicle planning information in the vehicle planning information database 320A and in the parking station planning information in the parking station planning information database 320B, the planning manager 323 may prioritize a use reservation related to the period for the owner of the vehicle or the person associated with the owner to use the vehicle, over a use reservation received from the user terminal of a user.Thereby, the car sharing system 1 can make the use reservation for the spare vehicle with respect to the period for the owner or the like to use the provided vehicle and make the parking station more secure than the return location.Above, the embodiments for implementing the present inventive concept have been described in detail. Note that the present inventive concept is not limited to such specific embodiments, and various modifications and improvements can be made within the scope of the subjects of the present inventive concept described in the claims.For example, although in the above-described embodiments, the authentication process of the mobile terminal 20 in the key unit 12 and the authentication process of the key unit 12 in the unlocking / locking / activating unit 11 are performed twice, the function of the key unit 12 may be incorporated into the locking / unlocking / activating unit 11 to omit the authentication process of the key unit 12. In other words, the locking / unlocking / activating unit 11 may perform an authentication process of the mobile terminal 20 by exchanging with the mobile terminal 20 based on predetermined short-range communication as in the key unit 12 described above, and when the authentication is successful, may directly perform locking, unlocking, activating, and the like of the vehicle 10 in response to an operation performed by the user.A car sharing system for vehicles including private ownership and / or corporate ownership vehicles receives, from a user's terminal, a usage reservation for one of the vehicles available at a parking station in the vicinity of the departure location during the period desired by the user and one of parking stations located in the vicinity of the destination where the vehicle can be returned at the time desired by the user to register the usage reservation in vehicle / parking station planning information; and makes use reservation with respect to a period registered in the vehicle planning information for the owner to use the vehicle, for another vehicle different from the vehicle among the vehicles available during the period, and for a predetermined parking station among the parking stations to which the other vehicle can be returned within the period to register the use reservation in the vehicle / parking station planning information.

Claims

A car sharing system related to a car sharing service in which a plurality of vehicles including at least one of a private ownership vehicle and a corporate ownership vehicle are shared among a plurality of users to be used, the car sharing service being operated by a company other than a company as an owner of the corporate ownership vehicles, the car sharing system comprising: a first storage configured to store vehicle planning information on respective usage plans of the plurality of vehicles; a second storage configured to store parking station planning information on respective usage plans of a plurality of parking stations configured in advance to park the vehicles; a communication unit configured to receive, from a user via a user terminal, a usage reservation for a vehicle among the plurality of vehicles available at a parking station in the vicinity of a departure location of the user during a period desired by the user, and for a parking station among the plurality of parking stations located in a vicinity of a destination location of the user at which the vehicle can be returned at a time desired by the user, based on the vehicle planning information and the parking station planning information, a reservation processor configured to register the usage reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory; a key information supply unit configured to supply key information for use of the vehicle corresponding to the use reservation registered in the vehicle planning information to a mobile terminal of the user corresponding to the use reservation, a determination unit configured to determine that a user of a vehicle or a person connected to the owner needs a replacement vehicle based on preset planning information when the vehicle is subject to the use reservation; wherein the reservation processor is configured to make a use reservation with respect to a period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a spare vehicle different from the vehicle among the plurality of vehicles available during the period, and for a predetermined parking station among the plurality of parking stations to which the spare vehicle can be returned within the period; and registering the usage reservation in the vehicle planning information in the first storage and the parking station planning information in the second storage, and wherein the key information supply unit is configured to supply key information for using the spare vehicle to a mobile terminal of the owner of the vehicle or the person connected to the owner.The car sharing system according to claim 1, wherein the reservation processor makes the use reservation with respect to the period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a vehicle parked at a parking station in the vicinity of a home location of the vehicle as the other vehicle, and for a parking station in the vicinity of the home location of the vehicle as the predetermined parking station; and registers the use reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory.The car sharing system according to claim 2, wherein the reservation processor, in response to a request from a user terminal corresponding to the owner of the vehicle or the person connected to the owner, changes the other vehicle of the use reservation that has been registered in the vehicle planning information with respect to the period for the owner of the vehicle or the person connected to the owner to use the vehicle to another vehicle parked in the parking station in the vicinity of the departure location other than the home location of the vehicle during the period.The car sharing system according to claim 2 or 3, wherein the reservation processor, in response to a request from a user terminal corresponding to the owner of the vehicle or the person connected to the owner, changes the predetermined parking station of the use reservation that has been registered in the parking station planning information with respect to the period for the owner of the vehicle or the person connected to the owner to use the vehicle to a parking station in the vicinity of the destination other than the home location of the vehicle.The car sharing system according to claim 1, wherein the reservation processor makes the use reservation in response to a request from a user terminal corresponding to the owner of the vehicle or the person connected to the owner with respect to the period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a vehicle mounted at the parking station in the vicinity of the departure place specified in the request as the other vehicle, and for a parking station in the vicinity of the destination specified in the request as the predetermined parking station; and registers the usage reservation in the vehicle planning information in the first storage and the parking station planning information in the second storage.The car sharing system according to claim 1, wherein the reservation processor makes the use reservation with respect to the period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a vehicle that is stored at a parking station in the vicinity of the departure place registered in advance as the other vehicle, and for a parking station in the vicinity of the destination place registered in advance as the predetermined parking station; and registers the use reservation in the vehicle planning information in the first storage and in the parking station planning information in the second storage.The car sharing system according to any one of claims 1 to 6, wherein the plurality of parking stations include parking stations corresponding to home locations of at least some of the plurality of vehicles registered in advance.The car sharing system according to any one of claims 1 to 7, wherein the reservation processor, when registering in the vehicle planning information in the first memory and the parking station planning information in the second memory, prioritizes a use reservation related to the period for the owner of the vehicle or the person connected to the owner to use the vehicle via a use reservation received from the user terminal of the user.An information processing apparatus related to a car sharing service in which a plurality of vehicles including at least one of a private ownership vehicle and a company ownership vehicle are shared among a plurality of users to be used, the car sharing service being operated by a company other than a company as an owner of the company ownership vehicles, the car sharing system comprising: a first memory configured to store vehicle planning information on respective usage plans of the plurality of vehicles; a second memory configured to store parking station planning information on respective usage plans of a plurality of parking stations configured in advance to park the vehicles; a communication unit configured to receive, from a user via a user terminal, a usage reservation for a vehicle among the plurality of vehicles available at a parking station in the vicinity of the departure location of the user during a period desired by the user and for a parking station among the plurality of parking stations located in a vicinity of a destination location of the user at which the vehicle can be returned at a time desired by the user, based on the vehicle planning information and the parking station planning information, a reservation processor configured to register the usage reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory; A key information supply unit configured to supply key information for use of the vehicle corresponding to the use reservation registered in the vehicle planning information to a mobile terminal of the user corresponding to the use reservation, a determination unit configured to determine that a user of a vehicle or a person connected to the owner needs a replacement vehicle based on preset planning information when the vehicle is subject to the use reservation; wherein the reservation processor is configured to make a use reservation with respect to a period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a spare vehicle different from the vehicle among the plurality of vehicles available during the period, and for a predetermined parking station among the plurality of parking stations to which the spare vehicle can be returned within the period; and registering the usage reservation in the vehicle planning information in the first storage and the parking station planning information in the second storage, and wherein the key information supply unit is configured to supply key information for using the spare vehicle to a mobile terminal of the owner of the vehicle or the person connected to the owner.An information processing method executed by an information processing apparatus, with respect to a car sharing service in which a plurality of vehicles including at least one of a private ownership vehicle and a corporate ownership vehicle are shared among a plurality of users to be used, wherein the car sharing service is operated by a company other than a company as an owner of the corporate ownership vehicle, wherein the information processing apparatus includes a first memory and a second memory, wherein the information processing method comprises: receiving, from a user via a user terminal, a usage reservation for a vehicle among the plurality of vehicles, which are available at a parking station in the vicinity of a departure location of the user during a period desired by the user, and for a parking station among the plurality of parking stations which is in a vicinity of a destination location of the user at which the vehicle can be returned at the time desired by the user, based on vehicle planning information stored in the first memory and parking station planning information stored in the second memory, and then registering the use reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory; providing key information for using the vehicle corresponding to the use reservation registered in the vehicle planning information to a mobile terminal of the user corresponding to the use reservation, determining, based on preset planning information, that a user of a vehicle or a person connected to the owner needs a spare vehicle when the vehicle is subject to the use reservation; wherein the reserving makes a use reservation with respect to a period registered in the vehicle planning information for the owner of the vehicle or the person connected to the owner to use the vehicle, for a spare vehicle different from the vehicle among the plurality of vehicles available during the period, and for a predetermined parking station among the plurality of parking stations to which the spare vehicle can be returned within the period; and registers the use reservation in the vehicle planning information in the first memory and in the parking station planning information in the second memory, and wherein the supplying supplies key information for using the spare vehicle to the mobile terminal of the owner of the vehicle or the person connected to the owner.A non-transitory computer readable recording medium having stored therein an information processing program for causing the information processing apparatus to execute the information processing method according to claim 10.

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