They keep holding up places like London 
and other European cities as models for Portlandia, claiming "we can't build our way out of congestion, so we need to spend billions of dollars on rail that cannot, by design, accommodate more than two train cars at a time." They also insist that we need more bicycle and pedestrian paths. If they get wind of what London has in mind, Portland politicians are going to want one, too.
The SkyCycle network proposal would spend some 220 million pounds to construct elevated bike paths above their existing rail network. How "green&sustainable" can you get?
