This review is for the car wash that is attached to this Shell station/convenience store.
We had driven this car on a recent road trip and it was pretty dusty, but then it was out during a haboob and turned into a mud-caked disaster. The price for the basic wash was $3.99. We paid inside, and a code was on the receipt that we punched into the machine before entering the car wash. The clerk inside was very informative, as he told us to make sure that we drive very slowly through the drying part of the wash.
We watched a car go through before it was our turn, and since everything looked like it was still attached to that car, we proceeded through, doing as the clerk suggested with a slow drive-out for the drying part.
The wash wasn't perfect (like a hand-wash) but it was certainly better than how it looked prior to this wash. I wouldn't hesitate to go here again.