[quote=FlyerInHi] That’s why China is betting on mega cities. [/quote]

To be fair, I don’t think China planned megacities. The planned on urbanization because massive proportion of people lived in rural areas (basically 50-80 years behind the west). The habitable land area is much less (basically the eastern side). Megacities is what resulted – for many years they had a constantly moving migrant population of over 100M.

At the same time though, I don’t think the US transit problem will be fixed by slightly increasing overall density. Before that happens, we’ll likely have autonomous vehicles – which will likely change dramatically how suburbs and cities will interact -especially if people stop taking personal vehicles to work. It’s pretty hard to foresee what AV will do vs other types of transit.