Koolau
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Gas taxes are already generally higher for all vehicles that use gasoline or diesel in that weight is a primary factor in MPG, so heavier vehicles use more fuel and pay more gas taxes as a result. “Big trucks” pay slightly more per gallon as well, the federal excise tax on gasoline is 18.4 cents per gallon and 24.4 cents per gallon for diesel fuel. In addition, many but not all, state diesel fees are higher per gallon than gas taxes.
How much would be fair?
https://en.wikipedia.org/wiki/Fuel_taxes_in_the_United_States
Wow. Fair? We could discuss this all day. What have I found? Most people really mean "equal" (whatever that means) when they say fair.
Without looking them up, I contend that fair means getting what you have coming to you. Or, it means getting/giving what you have earned/bargained for. It's fulfilling a contract as written.
Equal is "everyone gets the same thing no matter the contribution, effort expended, credentials, training, etc.)
Since no one will agree what "fair" is nor will anyone agree with my definitions, maybe we should leave it there. Heh, heh, but I will if you will.