Adam Opel AG (Opel, pronounced [ˈoːpl̩]) is a German automobile manufacturer headquartered in Russelsheim, Hesse, Germany, subsidiary of the American group General Motors. The company designs, engineers, manufactures and distributes Opel-branded passenger vehicles, light commercial vehicles and vehicle parts for distribution in Africa, Asia, Europe and South America. Opel designed and manufactured vehicles are also sold under the Buick brand in the United States, Canada, Mexico, and China, the Holden brand in Australia and New Zealand, and the Vauxhall brand in Great Britain.