I like the idea of a mileage tax replacing the current road taxes.
That way no matter how the vehicle is powered, electric, hydrogen, propane, gasoline, etc, it pays for every mile driven.
Ideally vehicles would get taxed based on actual miles driven, not some arbitrary average annual mileage like the current systems in place for EV. But I can see where people would cheat and lie and throw a fit if the cars self reported.
There has been very little freeloading for electric cars. 39 states charge EV owners an additional fee at annual registration to account for the lost gas tax.