What is the best to wash my car in the dead of winter? I have no access to a hose at home (at least in the winter season). If i take it to a touchless car wash is that any good? Or should i use the outdoor coin operated 3 minute manual car washes, with the high pressure gun wash, brush, rinse, soak and wax options? If anyone used one of the manual car washes please give any tips in order to clean the salt baked exterior of a black clear coated car?