Car-Free Diet is a program in Arlington, Virginia that encourages commuters to use alternate methods of transportation. In May 2010, two local guys participated in the first Car-Free Diet Skeptics Challenge, and they did their best to give up their cars for thirty days. They were selected in part for their great video submissions, so check out the introduction video and follow the entire month on the Car-Free Diet site.These guys walked away with lots of great free stuff, including new bikes, but more importantly, they learned how rewarding it can be to leave the car at home.