The first real Chevrolet Volts are built and tested at General Motors’ Pre-Production Operations facility in Warren, Michigan, Wednesday, August 5, 2009. About 80 Volts will be hand-built at PPO and undergo a series of road, crash and other engineering validation tests before production begins in the plant later next year. (Photo by Jeffrey Sauger for General Motors) (United States) X09SN_SN187