Earlier quoted context omitted.
While i kinda agree with you, it doesn't fly for most US cities. Most US cities aren't dense at all. A lot of them were built with transportation in mind. London and European cities in general are so much older that their city centers have no real way to accommodate that. So what do you do? You provide non car options. Technically they exist in US cities too, but especially on the west coast they're just not a viable…
West coast cities like Portland and Seattle both have very good transit and in my experience is generally better than driving since traffic and parking are awful. Where I live on the west coast is a mid sized city and transit is completely viable, my family only drives on weekends for example.
I live in Portland. Traffic is often quite slow. And even then it is much faster than public transit unless your destination is just a few miles away and on the same line.