Indianapolis 500 winner Dan Wheldon has been seriously injured after his car went sailing through the air during in a massive 15-car wreck early in Sunday's Las Vegas Indy 300.

Wheldon was injured when he car flew over another on the Lap 12 wreck and apparently caught part of the catch fence just outside of Turn 2.

Wheldon was transported to a hospital in a helicopter after a crash early in Sunday's Las Vegas Indy 300.

Paul Tracy, who was involved in the wreck, said a team of doctors was working on Wheldon, but there was no word of his injuries. A helicopter lifted off from the speedway, and an IndyCar official confirmed Wheldon was onboard.