See also:

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

Notes
One person per safety belt Never allow more than one person to wear a single safety belt. Never allow infants or small children to ride on a passenger's lap.◀ Putting on the belt Lay ...

Sitting safely
The ideal seating position can make a vital contribution to relaxed, fatigue-free driving. The seating position plays an important role in an accident in combination with: ▷ Safety belts. ...