Indianapolis 500 winner Dan Wheldon died Sunday at Las Vegas Motor Speedway after his car became ensnarled in a fiery 15-car pileup on Lap 13, flew over another vehicle and landed in a catch fence just outside turn 2.
The 33-year-old racer was a two-time Indianapolis 500 winner, including this year's race.
Three other drivers, including championship contender Will Power, were hurt in the pileup.
Weldon was airlifted from the track to University Medical Center; about two hours later, his colleagues were told of his death.
"IndyCar is very sad to announce that Dan Wheldon has passed away from unsurvivable injuries," IndyCar CEO Randy Bernard said. "Our thoughts and prayers are with his family today. IndyCar, its drivers and owners, have decided to end the race."
In his honor, drivers took part in a five-lap salute around the oval.
Dan Wheldon dies in huge crash at IndyCar finale