LAS VEGAS -- Dan Wheldon, the 2011 Indianapolis 500 winner and one of the most popular drivers in open-wheel racing, died Sunday at Las Vegas Motor Speedway in a horrific multicar crash on Lap 11 of the IndyCar Series season finale.

Officials decided to call the race, but the drivers, many sobbing openly, did a five-lap tribute to Wheldon. IndyCar Series CEO Randy Bernard made the official announcement of Wheldon's death without further comment.

"IndyCar is very sad to announce that Dan Wheldon has passed away from unsurvivable injuries," Bernard said. "Our thoughts and prayers are with his family today. IndyCar, its drivers and owners, have decided to end the race. In honor of Dan Wheldon, the drivers have decided to do a five-lap salute to in his honor."

Wheldon was airlifted from the Las Vegas track at 1:19 p.m. local time Sunday and taken to University Medical Center, becoming the first IndyCar driver to die on the track since rookie Paul Dana was killed in practice on the morning of race day at Homestead-Miami Speedway in 2006.

"One minute you're joking around at driver intros. The next, Dan's gone," said Dario Franchitti, whose wife, actress Ashley Judd, had to bring him a box of tissues. "I lost, we lost, a good friend. Everybody in the IndyCar series considered him a friend. He was such a good guy. He was a charmer."

Wheldon, 33 and the 2005 series champion from Emberton, England, was competing in only his third IndyCar race of the season, trying to win the race and earn a $5 million bonus that was part of a league promotion for driver who didn't compete full-time in the series this year.

Wheldon was the only driver to accept the challenge. This year's Indy 500 was the second time Wheldon had won the prestigious event. He also won it in 2005.

Wheldon was expected to replace Danica Patrick next season in the Go-Daddy-sponsored car for Andretti Autosport. Patrick is moving to NASCAR full-time in 2012.

Wheldon's family thanks everyone for their condolences, messages of sympathy and support at this very sad time, according to a statement released by his agency, GP Sports Management Ltd.

"They will make a further statement in due course, but in the meantime have asked that they be allowed to grieve in private," the statement said.

Andretti Autosport, the team with which Wheldon won the 2005

Indy 500, had agreed to a contract early Sunday for Wheldon to

replace Patrick next season. The deal was supposed to be signed

after the race.

IndyCar will not return to Las Vegas in 2012 following Dan Wheldon's death in the Oct. 16 season finale this season. Jennifer Stewart/US Presswire

Three other drivers, including championship contender Will Power were injured in the wreck.

The race was only minutes old when Wheldon, who started at the back of the 34-car field and was in position for a $5 million payday if he had won, couldn't steer clear of a wreck that started when two cars touched tires.

Within seconds, several cars burst into flames and debris covered the track nearly halfway up the straightaway. Some points of impact were so devastating workers had to patch holes in the asphalt.

Video replays showed Wheldon's car turning over as it went airborne and sailed into what's called the catch fence, which sits over a barrier that's designed to give a bit when cars make contact. Rescue workers were at Wheldon's car quickly, some furiously waving for more help to get to the scene.

"I'll tell you, I've never seen anything like it," Ryan Briscoe said. "The debris we all had to drive through the lap later, it looked like a war scene from Terminator or something. I mean, there were just pieces of metal and car on fire in the middle of the track with no car attached to it and just debris everywhere. So it was scary, and your first thoughts are hoping that no one is hurt because there's just stuff everywhere. Crazy."

Also injured in the crash were JR Hildebrand and Pippa Mann. Both will remain in the hospital overnight. IndyCar said Mann was being treated for a burn to her right pinkie finger and will be released Monday morning; Hildebrand was awake and alert but will be held overnight for further evaluation. Power was evaluated and released. An autopsy was planned Monday for Wheldon.