If you are really serious about a truck mount have a look at bane-clene.com We are running two of their units. I bought the first one in 1985 ............ yes 18 years ago and it's just coming up to replacement time now. They are 240v, quiet, can go portable when required for banks etc. They are distributed by a Crawley based company in the uk - no doubt there will be details on the parent company site. Also while you are at it why not check out joepolish.com He has some interesting carpetcleaning marketing ideas. The best kit in the world is no use if you ain't got the business!!