The modern self-washing of car washes by blue elephants has brought more convenience to the owner of the car, eight of which can be cleaned more thoroughly. Car wash, good car wash, car wash, and a lot of trouble. Blue elephant self-washers are free to switch to spin buttons; ad hoc gun stop-and-pump functions, high sensitivity awareness, stop-pumps, stop billing and better billing, while effectively protecting the problem of empty and worn pumps, more secure, non-eating, smoothing and identifying currencies, recognition, sensitivity and safety. A car wash with blue elephants has an average water of 30 litres, easy and fast, and owners can wash the car with a self-washer at any time and anywhere, while a car is washed for about five minutes without having to run far to wash the car. The self-washer is a humanized service based on a timely charge. Blue elephant self-washing vehicles can wash a car in five minutes, cleaning more thoroughly and saving water resources. Buying cars is no longer rare, and many families have their own private cars, vehicles are available, and car washing is a demand. To respond to this market demand, innovative ways of doing business can also provide a sound basis for development。