METHOD FOR OPERATING A HEAD-MOUNTED DISPLAY APPARATUS IN A MOTOR VEHICLE, CONTROL DEVICE, AND HEAD-MOUNTED DISPLAY APPARATUS

A control device in a motor vehicle receives a signal from a sensor device which includes at least one image of the current interior situation. The control device generates a superimposition signal containing the at least one image of the current interior situation and transmits the superimposition signal to a display element of a display apparatus. The display apparatus superimposes the at least one image of the current interior situation onto predefined output content output to a user.