In todays context we face two major challenges both of which stem largely from the abundance of gasoline driven cars on American roads. On one hand the U.S. and the world is facing high oil prices a looming shortage of oil as oil fields around the world go into depletion. On another hand the whole world is facing a global environmental catastrophe that’s destabilizing environmental conditions world-wide. On yet another hand (we must be from Mars) the U.S. style of building cities is wasteful of land and ties our hands to possible solutions because of the highway infrastructure.

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