This looks just like my Stand Alone Air Machine I was going to make! :)

Stand Alone Air Machine    Meter Boxes    Island   Bay Equipment    Carwash Specialists  Inc.photo 5-03photo 2photo 1-02photo 4-01

http://www.carwashspecialists.com/shopping/product.php?productid=16433&cat=386&page=1&js=n

There unit even looks used…. just like mine! :) I was going to use a Fragramatics Shampooer I purchased that came with a pedestal. Their unit looks janky with that brass fitting on the top? But whatever…. that just means my version can’t look the worse! :)