Kyle Thomas Busch (born May 2, 1985), is an American race car driver and team owner in NASCAR. He drives the #18 Mars/Interstate Batteries/NOS Energy Drink Toyota Camry for Joe Gibbs Racing in the Sprint Cup Series, the #18 Z-Line Designs/NOS Energy Drink Toyota Camry for Gibbs in the Nationwide Series, and the #18 Toyota Tundra for his own team, Kyle Busch Motorsports, in the Camping World Truck Series. He currently has the record for most wins in a season between the three series with 21 wins, which he accomplished in 2008. He also is the only NASCAR driver to win races in two of its national touring series on the same day by winning the Camping World Truck Series and Nationwide Series races held on February 21, 2009. He is only the second driver to ever win on their birthday, winning on May 2, 2009, his 24th birthday, in the Crown Royal Presents the Russell Friedman 400 at Richmond International Raceway. He is the younger brother of 2004 Nextel Cup champion Kurt Busch.