What I would do is the same as what most cities around the world are doing, spending more on public transport, spending less on roads, implementing tolls and congestion charges, and over time reshaping cities to be better for walking, PT, and cycling.

The US is not unique in having fully adopted cars and ripped up old PT networks. It happened all over Australia which is also a massive very spread out country. But significant effort has gone in to reversing the damage.

There is something deeply wrong about a society that can afford to create hundred billionaires but can’t afford busses.