In actuality I do believe there should be a "fair" way for EVs (which I think this tax is probably targeting, as they currently do not pay gas taxes which are supposed to aid in roadway repair) to pay "their share" of roadway maintenance burden. Gas sales tax happened to work out quite neatly because it was a) proportional to the amount of use of the vehicle(s) and b) encouraged further and further efficient vehicle use, but there's no 1:1 parity for EVs.

Personally I wouldn't object to some level of vendor integration where the car itself reported its mileage on a yearly basis for tax purposes and then was billed as part of your yearly registration fee.