The Chamberlain Group is a manufacturer of garage door openers and associated equipment headquartered in Elmhurst, Illinois. It is a subsidiary of The Duchossois Group, a family business owned by Richard L. Duchossois. The company is among the largest manufacturers of residential garage door openers in the world, with its main competitor being Overhead Door Corporation .
Kentucky Speedway is a 1.5-mile (2.4 km) tri-oval speedway in Sparta, Kentucky, which has hosted ARCA, NASCAR and Indy Racing League racing annually since it opened in 2000. The track is currently owned and operated by Speedway Motorsports, Inc. and Jerry Carroll, who, along with four other investors, owned Kentucky Speedway until 2008. The speedway has a grandstand capacity of 107,000.