Screw it, just create a whole new general transportation system. Outfit some capsules with oxygen systems and transport people (who are shorter that 6 1/2 feet). It'd be a hell of a ride.
I've actually been waiting for some group to setup a city somewhere with a new basic infrastructure than the road-liquid fuel model. It almost seems like someone could setup a community based on underground / enclosed personal and robot electrical wheeled transport for local movement with rail to get the distance movement. Not cheap, but if it starts small and has very good internet, it might attract some people to give a modest size project a go.
I saw that a while back, but I was looking for something with a more western basis to see if the current attitudes could allow something like this to work.