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gravity racer
* scale it up
* put it on rails
* marry it to a 140-mph roller-coaster drop ramp
* from any urban skyscraper
* lifted, empty, with renewable energy
* pointed towards the suburbs
* and you get a thrilling mass transit system
* which provides an experience some will pay an $ 80 (US) entry fee
* just to by a ticket for
* at an amusement park
* after stepping off a renewable-energy-powered elevator
* already installed in the skyscraper
* local gravitational constant = 'fuel'
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Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
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