"Unsurvivable" injuries from a fiery 15-car pile up claim the life of this year's Indy 500 winner.

Indy champion Dan Wheldon has died in a crash at the Las Vegas Motor Speedyway. He was 33.

Wheldon was involved in a fiery 15-car pile-up in the Las Vegas 300 in what was the last race of the IndyCar season. His No.77 car crashed into another racer and went airborne before hitting a wall at Turn 2 of the track. Wheldon was airlifted to a hospital but he could not be saved. His injuries were described as "unsurvivable" by IndyCar CEO Randy Bernard.

Dan Wheldon was a two-time winner of of the Indianapolis 500, in 2005 and this year. He was also the 2005 Indy Racing League IndyCar Series champion.

Wheldon leaves behind a wife and two young boys.

Our hearts go out to his family.

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