Dutch here:

US should “fix” itself.

• It is all about your “zoning laws” (change them first)
• Weakest traffic participants in traffic (pedestrians and bicycle riders) are protected by law

We had 2 “situations in the 70ties that helped”

• OPEC oil crisis => (car-free Sunday)
• “Stop de kindermoord action” => Stop killing of children (at least a few 100/year were killed)

We didn’t change overnight, but the first things were done mid 80ties.

My 2cts.