While it may look like chaos, this is a pretty well run operation that very efficiently washes your car (inside and out). It worth the time and hassle of washing your own car (unless of course you like doing it yourself). For the uninitiated, pull in, leave the car running, tell the attendant what kind of the wash you would like, go inside to pay (keep the receipt), and then wait for your car to come out of the tunnel. Once it does, a small army of people will wipe it down. When it's ready, hand the person your receipt and you're good to go.