> it's just a vision, something to strive for. There's no path to that vision in US urban areas. New airports will not be built near urban centers due to lack

> it's just a vision, something to strive for. There's no path to that vision in US urban areas. New airports will not be built near urban centers due to lack of land and NIMBYs. So you have a significant last mile problem. Everything seems possible when you don't know anything.