[gfaster]

The conflict here is that while bigger vehicles are often safer for the occupants, they are way more dangerous for anyone not inside a vehicle that big, especially pedestrians. Namely, if you get hit by a larger vehicle, you're less likely to tumble over the roof like what would happen with a sedan and instead you get knocked over and crushed.

And of course, "the fact that this makes it into an arms race of weight and size" is absolutely not something that we can ignore. This is a perfect example of a situation where everyone acting in their own rational self interest is way worse for everyone, and is why the government should be regulating the size of cars.