A temperature regulation system, which can be used to cool the interior temperature of an automobile/motor vehicle, when it is parked under the sun, substantially below the external temperature, was designed and produced. The system was powered by solar cells, thus functioning without dissipating any energy from the vehicle's battery. The mechanical device of the system incorporated Peltier elements, heat sinks and fans, all controlled by a power supply in the form of a circuit board. When the automobile was switched on, the system could be further used as an automobile climate control unit, for heating or cooling, withdrawing the supplementary electricity from the battery, another feature controlled by the circuit board.