I hate when people call and say “bay 3 stole my quarters and would not give me any time, I put in $7.00.” What?! You drive to the carwash and bay 3 works fine. But the underlining point is why would someone put in $7.00 when the machine starts at $1.50 and you get 20 minutes for $4.00?
There are lots of signs that you own a car wash, but quarters all over the place is probably the most obvious. You have a pocket full of quarters all the time. You have some quarters on your garage floor, car floor and maybe even on the floor at home. Or, maybe even in your shoes, which I found today. (Well I thought it was funny.)