dont do it , i looked into this , products make car look clean, look at car under street lights , looks like tiny scratches all over.
Someone tried it a few years back and advertised heavily. They even had a site in Brighton with a couple of car cleaners.I did buy some of their products but found it hard work and never was comfortable with the concept of waterless car cleaning, it just does not sound right. I think they were called The Waterless car Cleaning Company, seems to have evaporated now.
If you watch Ideal World there is a company promoting a Waterless ProductI cant remember there name but if you find out and Goggle the name of the supply company you can buy direct, as they sell to the trade.