sentences:  Coleman was discovered at an indoor karting center in Houston by LeMans champion Price Cobb.He set a record at the age of 16 years at the Rolex 24 at Daytona when he and his teammates finished 7th in the GT class driving a Porsche 911 GT3, making them the youngest team in history to drive and complete the famed race.Following extensive training and racing in stock cars and formula cars, he made his big league stock car racing debut in the ARCA Re/Max Series at Nashville Superspeedway on April 15, 2006, where he finished second.