Autopia is a great site for technique, products and the like, but if you seriously want to know more about the mobile detailing business, you might want to check out this site:
http://forums.delphiforums.com/priva...ages?msg=461.1
I am pretty sure you will have to register, and the actual board is not as user friendly as this one (VB rocks!), but there is a wealth of information. There are only a few of us mobile detailers registered on this board, so if you have questions we cannot answer here, then the Delphi board is a nice option.