Step Up With Your Best Urban-Transportation Ideas

Tom Vanderbilt, the author of Traffic, is launching a month-long “hive” project at Slate called Nimble Cities. It asks for suggestions to improve urban mobility: “we want your best proposals for solving an increasingly relevant problem: how to move the most people around and between cities in the most efficient, safe, and perhaps even pleasurable manner.”?Tom thinks Freakonomics readers in particular might have some good ideas — you’ve been well-trained, after all — so head on over to Slate and make us proud.[%comments]