London and Berlin felt pretty comparable to me, with the airport situation better in London but the biking situation better in Berlin (marginally).

Tokyo is just on another level entirely.

You should visit Taipei.

Since I can't edit, that should say 70% :) I reversed the figures

There are 20+ countries in the Northwest hemisphere.

It doesn't matter what most Americans want, because most urban land is zoned in such a way that single-family houses are all that is legal to build. The extremely high prices of housing units in central urban areas suggest that demand for dense cities, public transit, and shared spaces greatly exceeds the artificially-restricted supply.

Here in Seattle, you can basically see the zoning boundaries as you drive around the city, because development always goes right up to the edge, as hard as it can. Without the arbitrary limits imposed by the zoning code, there would be a whole lot more condos built (and lived in!), and those edges would be a lot softer, shaped by ebbs and flows of market demand rather than the sharp lines of law.

Genuinely dense cities basically don't exist in the U.S. The average "dense" city downtown in a U.S. city is broadly comparable to the worst car-dependent suburban or exurbian hellscapes of Europe and East Asia, and things only go worse from there. City downtowns near the East Coast are an exception since they were built in colonial times or thereabouts, so when you think "dense" you should really think of e.g. the densest boroughs in NYC.

You make it sound like the construction of US cities were not at all lobbied by the auto industry back in the day and that urban sprawl was exclusively people's choice.