The gravy train of highway construction has got to end (to mix some metaphors).

I dunno, I think today's highways will serve as transport corridors well into the future. Whenever I'm driving on a shiny new freeway I imagine light rail on one side and horse-and-cart on the other :)

When I look out the window of the train that runs along the freeway I imagine that a whole lane for push bikes or electric bikes would be handy if energy got really expensive. Come to think of it, that's how my great-grandad got to work during towards the end of the depression.