I think this argument distracts from the point of the gas tax in the first place, which isn’t to encourage efficiency but as a way to pay for infrastructure that everyone uses. The idea behind it being a gas tax was that it used to be generally true that heavier cars used more fuel and cause more roadway damage so…

Worst Era. Cab went from simple hard plastics to complex plastics that loved to make noise and/or break. Frame made of wet pasta. Crash tests weren’t good.