Zippy Auto Wash at 233 West Ellsworth Road, Ann Arbor, Michigan.

Sounded as if the premium package has unlimited car-wash guarantee at the paying machine. But when I came back for a second wash because wheels and lower body were not washed clean, the payment machine said that the additional wash is just basic wash that actually washes away the coating chemicals applied during the previous wash. Still had dirt unwashed on the wheels and lower part of the body after the second wash anyway that I could easily wipe away with some wet napkins after the second wash. I don't feel like going back in the futire.