Kasey Kenneth Kahne (pronounced /ˈkeɪn/; born April 10, 1980) is a full-time NASCAR driver. He participates in the Sprint Cup Series, NASCAR Nationwide Series and the NASCAR Whelen Modified Tour. He is the driver of the #4 Red Bull Toyota Camry for Red Bull Racing Team. Kahne also drives the Nationwide Series #38 Great Clips Chevy Impala for Turner Motorsports..