We know that road damage increases with the fourth power of vehicle mass. So why not tax the same way? If a 7000lb car cost 16x the taxes of a 3500lb car, we’d

We know that road damage increases with the fourth power of vehicle mass. So why not tax the same way? If a 7000lb car cost 16x the taxes of a 3500lb car, we’d hope to see more of the latter than the former.