General Motors Corp. on Aug. 7 will unveil at an auto industry conference in Traverse City, Mich., prototypes of a processor designed to allow a fuel cell to run on gasoline, and a stationary fuel-cell system that could be used to generate power for homes or offices, according to the Wall Street Journal. The announcements are the latest in a campaign by GM to demonstrate that it is serious about developing fuel cells as an alternative to conventional internal combustion engines, even as the company lobbies in Washington against proposals for stricter Corporate Average Fuel Economy (CAFE) targets for current light-truck models. GM is expected to display a prototype Chevrolet S-10 pickup mounted with a fuel-cell stack and a gasoline processor that extracts hydrogen from gasoline and sends the hydrogen to the fuel-cell stack. The fuel-cell system uses hydrogen to generate electricity, which then powers the truck's electric drive system.