There are a few around here. "3 minute" thing. We have a subscription. $14-20 something per month, I think, and you wash as many times as you want. The more "bells and whistles" ("hot wax," "under carriage" wash etc the more you pay. The basic one is fine because they run daily specials on the upgrades for free to try to convince you to upgrade. I have a little "sticker" that is read by a sensor. I think they recycle the cleaning fluid as there appears to be large filters and pumps involved. They are always busy and are constantly opening new locations. They seem to be making bank.
On a nice day there are multiple lines. They have card readers for those not on subscription. Son got it for us for Christmas several years and we just kept renewing. It's nice to have a clean car with so little effort. I always get comments on my Black Durango. Looks like a new one. It's a hot wash in the winter and it's about a mile from the house so sometimes I run the Durango through to clean off the ice and snow if they are open. In the summer it's a cool wash and is a great way to cool down my Black vehicle quick. They are all over the area so it's real convenient to wash your vehicle no matter where you are.