I mean if freeways adjust to have minimum speeds of e.g 55mph instead of the current 45 (and even that's only in some states), it would solve this by constraining such a car to cities and backroads.
I assume there's some exception (probably involving the orange slow vehicle warning triangles) for things like tractors.
https://www.census.gov/newsroom/press-releases/2022/urban-ru...
Just because you live in a miserable, car-bound, suburban hellscape doesn't mean that everyone else has to.