Hans Monderman brings us a revolution in urban traffic design, currently underway in the Netherlands: remove the roads.

"All those signs are saying to cars, 'This is your space, and we have organized your behavior so that as long as you behave this way, nothing can happen to you,"' said Monderman. "That is the wrong story."

"Who has the right of way?" he asked rhetorically. "I don't care. People here have to find their own way, negotiate for themselves, use their own brains."