Needless to say that a mandatory designation would soon follow.
You said — “Needless to say that a mandatory designation would soon follow.”
Well, I think it would be impossible for a “mandatory” designation to follow — because you’ve got a lot of out-of-state traffic. So, you can’t make it mandatory. The out-of-state cars won’t have the equipment and so the pumps have to be allowed to just “pump” the gas and charge a gas-tax at the “pump-rate”.
I think that they’ll always have a “gas-tax” differential to “persuade” people to get the equipment — but that they *always* have to have provision for cars who don’t have the equipment, because of many reasons...