High Quality Content by WIKIPEDIA articles! General Motors, also known as GM, is the world`s second largest car manufacturer based on annual sales. Founded in 1908, in Flint, Michigan, GM employs approximately 266,000 people around the world. With global headquarters at the Renaissance Center in Detroit, Michigan, United States, GM manufactures its cars and trucks in 35 countries. In 2008, 8.35 million GM cars and trucks were sold globally under the brands Vauxhall, Daewoo, Buick, Cadillac, Chevrolet, GMC, Holden, Pontiac, Hummer, Saab, Wuling.Saturn, and Opel.