Abstract: A roof extension for a motor vehicle has at least two roof members which are mounted by way of fastening devices on the vehicle roof. Guide rails are arranged approximately parallel to one another, along which a ladder can be displaced from a starting position into a transport position on the vehicle roof and can be fixed in its end position. For the sliding guidance at least on one end of the ladder, laterally projecting guiding devices are arranged, and the ladder, after the fixing is eliminated, can be displaced back into the starting position. The guide rails extend close to the fastening points of the roof members, the guiding devices being held by laterally projecting extension arms of the ladder.

Abstract: An arrangement for coupling the vertical position of a headrest assigned to a backrest of a motor vehicle seat with the withdrawal and retraction movement of a seat belt system with a belt retractor. When the seat belt is put on by a vehicle occupant sitting in the vehicle seat, the withdrawal movement of the belt strap is transformed into a movement of the headrest from a lower inoperative position into an upwardly displaced operative position. When the seat belt is taken off, the retraction movement of the belt strap is transformed into an opposite movement of the headrest back into the inoperative position. The arrangement comprises a locking unit for fixing the headrest can be fixed in its operative position. Starting from its operative position, the headrest can be vertically displaced with respect to the backrest and can be locked in the respective adjusted position.