[blincoln]

Significantly reducing the maximum speed of passenger vehicles would cause millions of Americans to suddenly have untenable commute times.

There are a handful of cities here with mass transit systems that aren't an absolute joke. Everyone who lives outside those cities relies on a car. What you're describing would be political suicide.

[tryptophan]

Capping cars' speed to 80mhp would not affect commutes at all. Can say that I drive over 75 mph very rarely.