There are car parks where you can actually pay when you get home online. Obviously you need ANPR for that. Anyway, even if I get cash out of a cash machine that is notes, not coins. So then I need to make an additional possibly needless purchase to build up some change.
You can sort of see why I never go into Stafford town centre much. What with the diabolical traffic down Radford Bank/Lichfield Road, 20 year old parking machines and the fact most of the shops seem to be empty and there's better choices out of town. Often I end up ordering online after going to the shops as they simply do not have what I want.
Remember when someone got hired to work out why the high street was dying? it's not difficult.