A temporary seat, permitting a driver to sit on the metal seat frame of a vehicle to drive the vehicle prior to installation of a permanent seat for the vehicle comprises a generally rectangular seat core made of pasteboard supported and on the metal seat frame. The seat core has an upper surface, a lower surface and a cellular construction spacing the upper and lower surfaces for resisting compressive forces tending to move the upper surface toward the lower surface and bending forces tending to bend the upper and lower surfaces out of their planes when the driver sits on the temporary seat. A seat cover of the temporary seat comprises a one piece sheet of pasteboard having fold lines. The seat cover includes a bottom panel generally underlying the lower surface of the seat core and having openings and receiving fasteners into the seat core to secure the temporary seat on the metal frame. An end panel extends upwardly from a fold line at a forward end of the bottom panel and covers at least a portion of a forward end of the seat core. A top panel of the seat cover extends rearwardly from a fold line at the top of the end panel and generally overlies the upper surface of the seat core to provide a surface on which the driver may be seated. A back support extends upwardly from a fold line at a rear edge of the top panel for engaging the driver's body to inhibit the driver from sliding backwards off of the temporary seat.