The state proposals I have seen invole charging tax at the pump based on the miles recorded on the GPS since the last fillup. Cars without the GPS are taxed at a very high default rate.
Always thought this system unworkable by the simple ease one could cheat it. Keep an old beater with the GPS and a large gas tank. Only drive it back and forth to the gas station. Siphon into other vehicles as needed. Never take the rest of your cars to a pump. You wind up paying tax only for the 100 miles a year you drive the beater.
Another scheme that my morality prevents me from profiting on.
