Today I washed the car in a self-service car wash bay. My son has been begging me to use one because he thinks it's cool…I have been putting him off because I didn't know how to do it…I always sat inside the car. I tried it today by myself…too much pressure to have a 7 year old – bursting-with-excitement-cause-he-wants-to-help-and-you-don't –have-a-clue-as-to-what-you-are-doing. I managed to put my money in and follow the directions. I don't think I took off too much paint with the power rinse. It is so funny the things that make you feel accomplished.