what does that foam thing do? I've seen that on clean your car... like a pre wash thing? What is it? Wouldn't a pressure washer with that specific fitment work?
it foams up the soap so much, that it sits on top of the car, so you leave it for like 5-10mins so it can work to settle the dirt, so you don't have to press hard to get rid of the dirt (which can scratch the surface)
my mates got it, but an attachment for his pressure washer, i only got a hose (and don't wanna splash out £150+ for a good pressure washer) so that one i said is the MUTTS NUTS!