One reason unfortunately is you have to share the road with those $50k pickup trucks and I would not want to be in a $5000 box anywhere near those things. I've seen a video once of a lifted pickup hitting a small economy hatchback. It was horrific.
Absolutely, but successfully enacting such measures would mean political violence, which is a whole different thing from traffic deaths, and even attempting it would probably lead to a wave of elections going toward the party promising not to do it (and likely to do a bunch of other things that are the governance equivalent of punching yourself in the face—god, our politics are dumb in this country). You think people get upset about any hint of gun regulation, look out if you go after big trucks. No-one's going to be crazy enough to try it, though yes, we definitely should take measures to drastically reduce the number of large personal vehicles on the road, in an ideal world.
