We both have black cars so we hand wash them together. Then I grab 2 towels at the same time (ex-bath towels, no softener, no lint left cuz they're old) & wipe down my car. Doesn't take long. I use that black car wax from Turtle Wax, I think, and that really makes those little icky white spots go away. I use a blck towel for the top. Also hae a lint roller for the dandelion fluff that is magnetically attracted to my roof. Does not take long at all. Our cars are tiny.