The Brompton U.S. Championship bike race is coming to Philadelphia on March 20, 2010. The race is limited to Brompton folding bikes and all riders must wear a suit jacket, collared shirt, and tie (and a helmet, of course). Winners will receive roundtrip airfare to England and entry in the Brompton World Championship at Blenheim Palace. rFor more information about the race go to ( Video by David Maialetti / staff photographer )