I remember when an old friend bought a BMW M3 new back in 2002. He put some sort of wax on it. I think he said 9 layers. He explained it built up a protective layer so dirt/etc basically wipes right off. Or you can just spray with a hose to clean the car without needing soap or sponges. It was a timely process but he said he loved it. Does anyone know what product this might have been?