See also:

The concept
The parked-car ventilation blows air into the passenger compartment to lower interior temperatures. The system can be switched on and off at any external temperature, either directly or by using ...

Parked-car ventilation
The concept The parked-car ventilation ventilates the vehicle interior and lowers its temperature, if necessary. The system can be switched on and off directly or by using two preset switch-on t ...

Closing the windows and glass sunroof/panoramic glass sunroof
Driving with the glass sunroof/panoramic glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...