See also:

The concept
This system issues a warning at speeds above approx. 40 mph/65 km/h if the vehicle is about to leave the lane on roads with lane markings. The steering wheel begins vibrating lightly. The system ...

Fuel gauge
The vehicle inclination may cause the display to vary. Notes on refueling. ...

After the ignition is switched off
The roof can still be operated for approx. 1 minute, as long as no door has been opened. ...