Abstract: A car washing installation has several jet nozzles (20) for a cleaning fluid, if necessary mixed with chemical substances, arranged one next to the other transversely to the length of the car and moved past the car in its longitudinal direction. The jet nozzles (20) are designed as rotative nozzles that supply a point contact jet that emerges from the rotative nozzles at a maximum acute angle of about 30.degree. in relation to the axis of rotation of the nozzles. To ensure that all car surfaces are reliably cleaned, even when the car has a rugged surface, characterized by recesses, the jet nozzles (20) can be periodically moved along the profile of the car on a perpendicular plane to the longitudinal axis of the car.

Abstract: A water-spreading plastic material, comprising a plastic base having a water-repellent surface and having coated thereon:(1) an adhesive comprising a non-water-soluble, organic solvent soluble and essentially non-swellable polar group containing polymer and,(2) a water-spreading layer adhered to said base by said adhesive, being composed of colloid particles selected from the group consisting of silicon oxide, a metallic oxide, and a mixture thereof.