Kim Kardashian and DJ and Producer Clinton Sparks pictured at the NASCAR Shelby American Sprint Cup Series Race at Las Vegas Motor Speedway in Las Vegas, NV on February 28, 2010. Kim was named the 2010 Race Co-Grand Marshall (Caroll Shelby is the Grand Marshal) and she announed 'Gentlemen Start Your Engines' before the race. RD/ Erik Kabik/ Retna Digital