Motor vehicle, in particular for passenger cars, with a ventilating device

A car, especially a car with a ventilation device for the ventilation and/or air conditioning of the inside space of the car, is described. There is a solar cell arrangement (12) for the charging up of an energy store (6,18) that feeds the ventilation device. The ventilation device has an air-conditioning installation (4) and at least one additional fan (16) which the energy store feeds. The solar cell arrangement is located on the roof of the car.