Keystone Motors was an automobile manufacturing firm located in Keystone City, Kansas. It had enjoyed recent success, manufacturing 12% more cars in a quarter than any of its competitors in Detroit. One of its most famous cars was the classic Phoenix Roadster. Its CEO was William Slout. Keystone Motors recently laid off a large portion of its workforce in favor of new robotic technology, with artificial intelligence provided by S.T.A.R. Labs. Two of the people hired to help monitor the robots were Bart Allen and Griffin Grey.