IZOD IndyCar World Championships
The IZOD IndyCar World Championship Presented by Honda was an IndyCar Series race on the Las Vegas Motor Speedway, held from 1996–2000, and again in 2011. It was first known as the Las Vegas 500k. The Champ Car World Series held a race at the track during the 2004 and 2005 seasons as doubleheaders with the NASCAR Camping World Truck Series and a street race was held in Las Vegas at the Fremont Street Experience in 2007.
2011 IZOD IndyCar World Championship
On December 9, 2011, IndyCar decided that they were not going to return to Las Vegas for the 2012 season. Randy Bernard expressed reluctance to return to the speedway following Wheldon's death, despite the insistence of Speedway Motorsports, Inc. president Bruton Smith (who owns the track in Las Vegas as well as three other tracks used by the IndyCar series) for the series to honor its three-year contract with the track. As of that date, the investigation into the accident was still ongoing. IndyCar was holding back on the release of its 2012 schedule until the investigation concluded. The IndyCar series also conducted an investigation into whether or not the series should continue racing on high-banked ovals such as Las Vegas and Texas Motor Speedway in Denton, Texas. Texas had been one of the staples of the IndyCar series since 1997 and had yet to be confirmed for 2012 prior to the Las Vegas race in 2011. Indycar's future at high-banked ovals was in jeopardy pending the results of the investigation. Texas was eventually placed on the 2012 schedule.