This intent of this post isn't to grandstand-Sound like one of those cool-but-too-crazy-to-work kind of transit schemes? Beijing has already mapped out 116 miles of its Mentougou District as a test bed for the 3D Fast Bus. Construction to install the proper infrastructure should begin by year's end.
Each choice we make takes away from another form of transit- Buses even conflict with buses- as we've spoken about on Nicollet mall and seen if we've ever ridden a bus-Except expensive tunneling and for some reason unliked elevated ...
Something other China seems to have found something that is less intrusive-
It could ride on modified guideways where Snelling narrows
http://www.popsci.com/cars/article/2010 ... underneath