Title text:
'They really shouldn't let those small cars drive in traffic. I worry I'm going to kill someone if I hit one! They should have to drive on the sidewalk, safely out of the way.'
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3167/
I like the idea of just having a tax linked directly to how much wear a vehicle causes to roads, because the wear goes up exponentially with weight. Not only would this make oversized cars (and cars in general) much more expensive, it would also provide the funds needed to repair roads that get completely annihilated by trucking companies.