Abstract: A paint drying system for drying painted motor cars, particularly those cars painted with water-born paints. The system includes a spray booth (2) which is supplied with heated air which flows in a downdraft from an upper inlet (32) to a lower outlet (44) and also from wall-mounted air jets. The air from the air jets disrupts the downdraft causing air turbulence within the spraybooth (2) which accelerates drying of the painted cars. In a preferred embodiment, the spraybooth has corner mounted air jets.