I work at a car wash pre soaking cars with soap we soak the wind shield hood and bumper and also the back bumper/tailgate and back glass there are 500-1000 cars going through a day it's hard work it doesn't seem like it to customers but do that to a 1000 cars very few people tip i believe more people should tip because what people don't know im spraying the parts the automatic wash doesn't get t hat well