Chevy Camaro platform underpins new GM vehicle in Chicago

General Motors has big plans for the upcoming Chicago Auto Show. At the exposition opening this week, GM will unveil a pair of new vehicles, although details on what form they'll take remain scarce.The news comes from reports quoting GM's North American president Mark Reuss. All he's revealed at this point is that one of the two cars will be based on the Chevrolet Camaro's platform. That tells us