Grand marshals Kim Kardashian (2nd-L) and Caroll Shelby (2nd-R), with Las Vegas Showgirls, give …

Grand marshals Kim Kardashian (2nd-L) and Caroll Shelby (2nd-R), with Las Vegas Showgirls, give ...

Grand marshals Kim Kardashian (2nd-L) and Caroll Shelby (2nd-R), with Las Vegas Showgirls, give the command to start engines at the 2010 Shelby American NASCAR Cup Series race at Las Vegas Motor Speedway on Feb. 28, 2010. (Jeff Speer/LVMS)