Agreed. Road damage scales as the _fourth power_ of the axle weight. That's bonkers, you don't see that exponent in many phenomena.

The question is how to move the funds around, as state taxes and road funding stop at state borders, but vehicles don't. And of course states will have a patchwork of registration rules, and won't share money with each other. So the trucking industry will lobby some state to be a tax haven, and all trucks will just be registered there.

If only we had some sort of organization that allows states to solve issues that happen between states, like a larger government function...