Abstract: Cleaning vehicle sensors, wherein position data of a vehicle are received (1). An unmanned aircraft suitable for cleaning vehicle sensors flies to the vehicle on the basis of the received position data of the vehicle, positions itself, on the basis of location data of a sensor of the vehicle that is to be cleaned, near the vehicle in such a way that the sensor to be cleaned can be cleaned, and cleans the sensor. The vehicle can transmit the position data of the vehicle to a Service Station via a mobile data connection, wherein the Service Station causes the unmanned aircraft to fly to the vehicle and, after the end of the cleaning operation, to return to the Service Station.

Abstract: A mounting channel and presentation mechanism for mounting presentation elements. Both planar and curved presentation elements may be simultaneously mounted on the same supporting element. A mounting channel for mounting presentation elements has a curved outer contour, especially one resembling the shape of a segment of an ellipse. A U-section is additionally inscribed in the outer contour.