Natural gas chopper (photo)
Jon Bolton (center) shows Todd Elston and Sadie Richardson, both of Denver, the Chesapeake CNG Chopper -- the world's first natural gas-powered chopper. Orange County Choppers built it in 2009 for Chesapeake Energy. The motorcycle and numerous other vehicles are on display at the Charleston Civic Center as part of the 2013 Appalachian Basin Natural Gas Vehicle Expo and Conference. The event will be open to the public from 9 to 11 a.m. Wednesday.