I just finished a quick three-minute wash/rinse at the local car wash using the Eezy Wash iOS (Android also available) app.
First you select the car wash location from the list. Next which service, be it auto wash, fragrance, vacuum, self-service bay or a vending machine. There’s no dog wash here.
Then choose the price/time interval. I just has a bit of dust to shift, so I opted for the $2/3-minute item.
After a 15-second pause three minutes appeared in the wash bay display. A receipt for $2 (18 cents tax) was also emailed to me.
Each individual machine in these car wash establishments has a relevant number. I’m parked beside vacuum 3 & I used self-service wash bay 2.