Hendrick tabbed development driver Kyle Busch, the younger brother of Kurt Busch, as Labonte's replacement for the 2005 season. Busch easily won the 2005 rookie of the year battle and made history when he took the checkered flag in the Sony HD 500 at California Speedway for his first win, becoming the youngest driver to ever win a Cup Series race at the age of 20 years, 4 months, and 2 days. Busch would win later that year at Phoenix. In 2006, Kyle won once and qualified for the Chase for the Nextel Cup, ultimately finishing tenth in points. In 2007, Busch grabbed a win at the Food City 500, the inaugural race for the Car of Tomorrow. On June 13, 2007 Hendrick announced that Kyle Busch would not return to drive the No. 5 car in 2008.