US IndyCar Crash

Drivers Dan Wheldon, front, and Will Power crash during a wreck that involved 15 cars during the IndyCar Series' auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, Oct. 16, 2011. Wheldon died following the crash. (AP Photo/Las Vegas Review Journal, Jessica Ebelhar)

Dan Wheldon, of England, smiles during driver introductions for the IndyCar Serie's Las Vegas Indy 300 auto race Sunday, Oct. 16, 2011, in Las Vegas. Wheldon, a two time Indianapolis 500 winner, died following a crash in the race. (AP Photo/Isaac Brekken)

Drivers Dan Wheldon, front, and Will Power crash during a wreck that involved 15 cars during the IndyCar Series' auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, Oct. 16, 2011. Wheldon died following the crash. (AP Photo/Las Vegas Review Journal, Jessica Ebelhar)

Dan Wheldon (77), of England, along with Sebastian Saavedra (34), of Colombia Pippa Mann 30), of England, and E.J. Viso (39), of Venezuela drive early in the IndyCar Series' Las Vegas Indy 300 auto race Sunday, Oct. 16, 2011 in Las Vegas. The race was stopped after a 15 car that resulted in the death of Wheldon, a two time Indianapolis 500 winner. (AP Photo/Eric Jamison)

Drivers, including Dan Wheldon (77, in air at left), crash during a wreck that involved 15 cars during the IndyCar Series' Las Vegas Indy 300 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, Oct. 16, 2011. Wheldon died following the crash. (AP Photo/Las Vegas Review Journal, Jessica Ebelhar)

Drivers crash during a wreck that involved 15 cars during the IndyCar Series' auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, Oct. 16, 2011. Dan Wheldon, a two time Indianapolis 500 winner, died following a crash. Will Power (12), of Australia, is at left. (AP Photo/Las Vegas Review Journal, Jessica Ebelhar)

Fans, drivers and teams stand in honor of Dan Wheldon, a two time Indianapolis 500 winner died following a crash in the IndyCar Series' Las Vegas Indy 300 auto race earlier Sunday, Oct. 16, 2011, in Las Vegas. Wheldon was driving car No. 77. (AP Photo/Isaac Brekken)

Dan Wheldon (77) goes airborne during a wreck that involved 15 cars in the IndyCar Series' Las Vegas Indy 300 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, Oct. 16, 2011. Wheldon died following the crash. (AP Photo/Las Vegas Review Journal, Jessica Ebelhar) LAS VEGAS SUN OUT MANDATORY CREDIT NO SALES

Chris Sheridan, left, and Lisa Slavik comfort each other after a crash which killed Dan Wheldon, a two time Indianapolis 500 winner, in the IndyCar Series' Las Vegas Indy 300 auto race Sunday, Oct. 16, 2011, in Las Vegas. (AP Photo/Isaac Brekken)

Fans stand as drivers take five tribute laps in honor of Dan Wheldon, a two time Indianapolis 500 winner who died following a crash in the IndyCar Series' Las Vegas Indy 300 auto race earlier Sunday, Oct. 16, 2011 in Las Vegas. (AP Photo/Eric Jamison)

Dario Franchitti, of Scotland, returns to pit row following tribute laps in honor of Dan Wheldon, who was killed earlier in a crash during the IndyCar Series' Las Vegas Indy 300 auto race on Sunday, Oct. 16, 2011, in Las Vegas. (AP Photo/Isaac Brekken)

Drivers, including Dan Wheldon (77, in air at left), crash during a wreck that involved 15 cars during the IndyCar Series' auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, Oct. 16, 2011. Wheldon died following the crash. (AP Photo/Las Vegas Review Journal, Jessica Ebelhar) LAS VEGAS SUN OUT MANDATORY CREDIT NO SALES

Drivers crash during a wreck that involved 15 cars during the IndyCar Series' Las Vegas Indy 300 auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, Oct. 16, 2011. Dan Wheldon was killed in the crash. (AP Photo/Las Vegas Review Journal, Jessica Ebelhar) LAS VEGAS SUN OUT MANDATORY CREDIT NO SALES

Crew members look at Paul Tracy's car after a 15 car crash early in the IndyCar Series' auto race Sunday, Oct. 16, 2011, in Las Vegas. (AP Photo/Eric Jamison)

Drivers crash during a wreck that involved 15 cars during the IndyCar Series' auto race at Las Vegas Motor Speedway in Las Vegas on Sunday, Oct. 16, 2011. Australia's Will Power, lower right, goes airborne. (AP Photo/Las Vegas Review Journal, Jessica Ebelhar)