Its a sad news for every one..Two-time Indianapolis 500 winner Dan Wheldon died Sunday of "unsurvivable injuries" sustained during a multi-car wreck at the Las Vegas Indy 300. He was 33.Racing accidents are not uncommon, though fatal ones have been rare in recent years."I know this sport is risky. I know we're exposed to that every day, in normal life as well. But you know, you don't think about it. Today we have to think about it," he said."I lost one of my best friends, one of my greatest teammates," driver Tony Kanaan said.