> It's not about capacity. It's about convenience. Subway systems are absolutely useless unless the stations are spaced very close together and there are other means of transit from the station to where you want to go

Sooo... How is Musks' solution different? It's absolutely useless unless you have entry and exit points spaced very close together and there are means of transit from the exit point to where you want to go. You basically create chokepoints at each of those entries and exits.