A spare-wheel carrier for a motor vehicle is pivotable at a body of the motor vehicle and arranged in a region of a tailgate of the motor vehicle. An option to record video related to a selectable display may be presented to users. The first- and second-layer data include area data about individual zones into which a region corresponding to the third-layer data is divided. During the soldering process, the individual temperatures of each one of the sets are transmitted by a radio frequency transmitter to a receiving and control unit. The wireless module transmits the packets to a 3D display device external from the apparatus. A system controller directs the flows of documents over the transport mechanism.