"DON'T PRESS THE GREEN BUTTON! This adds $1 per press. Self wash. I only wanted a 5 minute wash for $3 but when it started it was beeping and the green light was flashing so I pressed it once and got a 6 minute 40 second wash for $4. No big deal. I now know for next time that it probably starts itself. Self wash only takes credit cards, no coins or cash. It's a little slow switching modes like from spray to wheel/tire cleaner, but most self washes are like that. Thanks for having us!"