When I talk to colleagues in various US cities and they say they drive to work it just Does. Not. Compute. In central London, driving to work is essentially unheard of unless you are the Prime Minister.
There is parking available in London, but the prices are fairly high - I just had a quick look on parkopedia [1] and it looks like 08:30-17:00 would set you back anywhere from £25 to £50 a day (about the same as half to a full tank of petrol or diesel). Then add in congestion charging @ £11.50 a day [2] and you're looking at £35-£60 a day in fees before you add in your hassle factor of the traffic and paying for fuel
Understandably, as a result a lot of people use public transport. Sure its fairly decent in London, but thats only because people use it and pay for it so there are funds to reinvest into making it run effectively.
If suddenly the average US driver was looking at paying $100/day to drive to work (or $2000 a month), I am sure that they could handle sitting on a bus for $10/day and pocket the $90 change, while the public transit gets better and better as a result.
This is a solvable problem.
1 - https://en.parkopedia.com/parking/locations/tottenham_court_...