Racing fans woke up to tragic news on Monday morning: Indy racer Dan Wheldon was killed in a car crash on Sunday, Oct. 16, at the Las Vegas Motor Speedway. The 33-year-old Indianapolis 500 winner was involved in a 15-car pileup that sent his vehicle flying over other cars and into a fence. Wheldon, an English racer, was airlifted from the scene to a local hospital, but his injuries were too great to survive.

As the sad news of Wheldon's unfortunate death spread, many people -- including those close to him -- began to react publicly. "One minute you're joking around at driver intros. The next, Dan's gone," said fellow IndyCar racer Dario Franchitti, whose wife is Ashley Judd, Naomi Judd's daughter and Wynonna's half-sister. Several country stars who are tied to the racing industry took to Twitter to share their thoughts on Wheldon's death and mourn with their followers. See what Reba McEntire, Rascal Flatts' Jay DeMarcus and more had to say about the passing of the racing legend.