http://www.theatlanticcities.com/design/2012/11/6-ideas-every-city-should-steal-barcelona/3998/
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1. Don't think like a city planner, architect or engineer. Think like a citizen.
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3. Make walking (and biking) irresistible.
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Urban biking is growing fast in Barcelona, spurred on by the locals-only bikeshare system, and very simple bike-lane approaches (some separated, some not) to improve bike safety. When the city has incorporated separated bike-lanes, it’s taken from the 50 percent that's for the rest of traffic, not from the walking half.
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If only we could :-(