Abstract: An arrangement in an automotive vehicle for converting the vehicle from a first vehicle mode in which a protective barrier extends transversally between a forward vehicle compartment and a rearward vehicle compartment, and a second mode in which the vehicle has the form of a dormer-type vehicle providing at least one sleeping berth. The arrangement comprises an elongated transverse support beam which is attached to the floor of the vehicle at right angles to a longitudinal vehicle center line and which has first, second and third arrays of hinges arranged in given mutual relationship thereon. A first elongated sheet-like member is detachably connected to a first selected array of the hinges, for movement between a substantially vertical position in which it forms a barrier across the vehicle seat structure, and a horizontal position in which it forms part of a bed structure.