since i did my back i use their snow foam stuff to wash the car you just spray it on with a pressure washer leave 10 mins and spray off then repeat with the polish. it at least means i can clean my own car rather than use these slave labour hand washers. then about 6 monthly i do the full by hand clean but that now takes most of the day lol and i am in bits after.
i love their leather cleaner and polish as well keeps the seats like new.
ive tried other stuff but always gone back to autoglym.