How to move people efficiently...

[samhill]

Yep, the best way to transport, nice level ground,hardly any rivers.
Company execs won't have the peons to make their flights reasonably priced though.

[farmaholic]

Are distances and population the limiting factor?

[tubs]

As soon as start subsidizing railroad the air plane industry will start whining. Also I was just in Romania and all the rails were double tracked what a concept hey. Most there are electric train engines