hi joden you would lift it out from car empty then fill with water . from 25l container or if you have a van tank fitted fill from that with a 2000L bilge pump this takes seconds to fill with 60 l (pump cost is 20.00 )
if you end up with water left over after job is don you have a tap on 60l container so u can turn tap off remove contaner and lift back in to car, car stays clean and dry . ty from a l windows .ps if you need to know more info ring or tex me on 07817991412 (iv not yet put this on my web will be on their soon )