Spurred by environmental awareness or, more likely, the impending oil shortage, public transportation will soon see an unprecedented growth spurt. If our current infrastructures are too cumbersome to handle this kind of rapid expansion, what will the new technologies look like? Which assumptions do we need to re-evaluate about our means of public transportation? Here’s a new take on an old idea: A hybrid between an elevated train and a suspension footbridge.

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Post tags: Air Tram, public rapid transit, San Francisco, Think Sketch