I don't support this
Yes the fleet overall will become more efficient but tax on gasoline the trucks pay more and the civics pay less currently. Both trucks and cars are becoming more efficient however most places tax gasoline so when oil went up so did their tax revenue, did they complain about that? Or the many places where its tax on tax? No
Suck it up and figure out how you are to pay for roads KNOWING this. Everyone uses roads and not just the people who drive on them, how much are bicyclists paying currently or pedestrians?
Wouldn't it just be easier to tax gasoline higher then rather than to come up with a whole new system?
It entirely depends on the state. Most states charge a flat tax on gas, not a percentage. Although there are some that do.
As for perdistrians and bicyclists. THey dont cause the degradation of roadways that cars and trucks do.
The gas tax is a tax on gas but its purpose it to pay for road maintenance.
How about states do away with property taxes, gas taxes, fees, misc taxes and just implement a progressive income tax?
No people wont like that either. They dont want to pay any taxes, but yet they want to consume public goods and services.