Some dealerships have automatic drive-thru washes.. typically with the rolling brushes and what not. Equally, if not worse than a poor hand wash. I just avoid them completely. The only person to ever wash my car is myself. Don't trust anyone lolNow I'm paranoid of the car wash I usually get after bringing in a car for maintenece. I actually have no idea how they go about washing the cars; an automatic car wash or someone with a broom?