A paver (1) or feeder vehicle (11) comprises a material
bunker (4,12) for receiving a paving material (3), and a pushing means (10,10',14,14') fixed forward of the material
bunker at a
chassis, such that pushing rollers of the pushing means (10,10',14,14') may dock to rear tires (17) of a
truck (15). The pushing rollers comprise a pair of first pushing rollers (19,19') mountable in a first position (P1,P1') in a seat of a
traverse of the pushing means (10,10',14,14'). Either the pushing means (10,14) is expandable by at least one changeable attachment (21) to which the first pushing rollers (19) may be mounted in a second position (P2) further forward with respect to the first position (P1), or the pushing means (10',14') comprises a pair of second pushing rollers (25') which may be selectively positioned forward of the first pushing rollers (19').