Choosing an automatic commercial car wash instead of washing your car at home can save as much as 70 percent of the water used. Car washes do more than keep your car looking clean, they also help protect it in the long run. All of the dirt, grime and other debris that ends up on the exterior of your car can slowly create microscopic chips that eat away at your vehicle's paint. The more chips, the more tears, and the more chances the raw metal underneath has to become exposed. Rust can form and eat away at your car at a rapid pace. So make washing your car a regular habit.