Las Vegas Motor Speedway
On October 16, 2011, the final race of the 2011 IndyCar season, the IZOD IndyCar World Championship, was held at Las Vegas. However, the race was halted by a horrific crash on lap 11 that involved 15 cars, some of which became airborne, and some of which burst into flames. The crash began when Wade Cunningham made light contact with James Hinchcliffe, but the situation turned into a big pile-up of cars. The crash allowed a red flag to be waved almost instantly, due to the remains of the damaged cars and the amount of debris on the track.
Science Olympiad
Many states also hold invitational tournaments. These competitions serve as "practice rounds" for qualifying tournaments, and are hosted by individual middle schools, high schools and/or colleges. Invitationals occur most commonly in January or February, although there have been some as early as October or as late as April. Teams can participate in invitationals from multiple states depending on availability. At some invitationals, only a few events are held. However, many invitational tournaments mimic regional and state competitions in their competitive intensity. For example, MIT hosts an invitational tournament each year with around 70 teams from over a dozen states, including 20 or more past national qualifiers. Other tournaments, especially in the midwest, are well known for their quality and competitiveness. In this way, teams can gain extra practice before competing in regional, state, or national tournaments. In 2014, Yale University became one of the first institutions of higher education to host a tournament run by Science Olympiad alumni, with several more following over the next few years.