I have a Steel Eagle Fury Vacuum Unit on a trailer.  It really sucks! In a good way.  All set up, hitch it up and go to work.

See link, http://janesville.craigslist.org/for/4459568776.html

I am in Southern Wisconsin, call the number in the ad, my shop manager, or me 608.290.9179

I still have this awesome water recovery system for sale!  I will have it at the revolution camp in Milwaukee for anyone who might be interested.