On Friday, the new General Motors (GM) began operations with a new corporate structure, and is now primarily owned by the governments of the U.S., Canada and Ontario, along with the UAW Retiree Medical Benefits Trust. The result of an asset sale approved by the bankruptcy court on July 5, the new GM will narrow its focus to four core brands (Chevrolet, Cadillac, Buick and GMC). Also, the number of U.S.