Speed made his NASCAR Craftsman Truck Series debut at Atlanta Motor Speedway on March 7 , 2008 driving for Morgan-Dollar Motorsports # 46 Chevy with Red Bull sponsorship .
Speed made his Craftsman Truck Series debut at Atlanta Motor Speedway on March 7 , 2008 . He drove the Morgan-Dollar Motorsports # 46 Cheverolet truck with Red Bull sponsorship .