just had a read, to be honest there are some points that made me think, our Greese/oil and clog up the swers? sooo you telling me that the actual poo thats down there is better?
gotta laugh at that also that the "Shampoos used have bad cemicals" thats bul crap, if it was that bad, it would damage our paint work? correct me if im wrong but arnt our drainage systems made of BRICK!? so our paint work is harder wearing? Give over, anyway I honestly couldn't care less if they put this in place I have personally used the "So called better car washes" and all they do is leave streaks, don't clean your car correctly and can damage the paintwork.
Lock me up for "washing my car" I say