Take Arlington’s Car-Free Diet Challenge and see results in as little as one day. Share with us how you’ll start your diet and you’ll get a coupon for the special Arlington edition of How to Live Well Without Owning a Car by Chris Balish. And if you fill in your information on the Car-Free Diet calculator or share your story, you'll also get a free Car-Free Diet t-shirt. (While supplies last. Limit one per person.)