Most Americans flip out at things like replacing street parking with bus lanes, or allowing for higher density zoning than detached single family houses in large lots.

We're a million miles away from "draconian" measures. I've been to Sweden a couple times and they're not exactly laboring under the authoritarian boot of multi-modal transport. If anything, the fact that most places in the US de facto mandate car ownership to do anything is far, far more draconian than providing residents with a variety of options.

I don't deny that cars are tremendously useful, but we've nevertheless managed to overuse them.

A speed governor is not draconian. Limiting things to the maximum speed on federal roads would be a start. Further location based speed enforcement would require some investments.

And 2.1 million emergency visits per year for injuries related to motor vehicle crashes.

Before that it was still in the mid to high 30 thousands for a while. Still terrible!