engine the steering system and the brakes of the vehicle that are jointly referred to as the drive system 10 in order to autonomously plan and control a parking maneuver in response to a command by a user the control unit 9 is connected to the detection device 12 via the evaluation unit 11 the detection device 12 should be arranged outside the vehicle body 2 because its interior is essentially field free the detection device 12 is preferably arranged underneath the vehicle body 2 because the electrostatic field is in the case of a static charge of the vehicle body 2 most intense between the vehicle body and the ground 4 the detection device 12 illustrated in the figure includes a generally known double pointer electroscope 13 a double pointer 14 is fixed on a rod 15 that is conductively connected to the vehicle body 2 rotatably namely about an axis extending almost through its center of gravity such that an electrostatic charge of the vehicle body 2 also propagates to the electroscope 13 and the repulsion between the charges of the same sign distributed over the double pointer 14 and the rod 15 deflects the double pointer 14 relative to the rod 15 a contactless sensor preferably an optical sensor 16 is provided for detecting the position of the double pointer 14 instead of using an electroscope 13 it would also be possible to provide a detection device 12 in the form of an electric field meter that is also referred to as a field mill such a field mill.