If you've ever dealt with coin operated machines, harvesting the money counting it, and rolling it so the bank will accept it is a huge pain. It takes a lot of labor to get the fruits from the machine. multiply this by 365 days a year and it adds up to a lot of hours.
Soooo much easier to just get a printout and the money is likely already credited to your account, no muss no fuss.
Also since the huge inflation we've had in the last 4 years (estimated to be 20-25%) it takes a whole bunch of coins to buy anything from a vending machine. Car washes aren't the only vending business to make the change to electronic payment, many snack machine, pop machines, etc. accept plastic nowadays.
Electronic payments are more convenient for the vendor, but it also leaves a trail for the Gov't to prove you're under reporting your income, it's a double edged sword, and it isn't a coincidence either. They tell you it's for the business owner to save time, but the biggest reason any government wants electronic records of transactions is to be sure they're not being cut out of tax revenue, plus they're keeping an eye on your activities. George Orwell saw what was coming in the future of mankind.
Progress waits for no man.........
