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A BMW Sauber P86 V8 engine, which powered their 2006 F1.06.
* the World Championship was not always exclusively composed of Formula One events:
The distinction is most relevant when considering career summaries and "all time lists". For example, in the List of Formula One drivers, Clemente Biondetti is shown with 1 race against his name. Biondetti actually competed in four Formula One races in 1950, but only one of these counted for the World Championship. Similarly, several Indy 500 winners technically won their first world championship race, though most record books choose to ignore this and instead only record regular participants.
The most recent example of a "Formula One race" not being a "World Championship race" very nearly occurred at the 2005 United States Grand Prix. 14 of the 20 drivers ended up not racing due to
problems with their Michelin tyres, and the failure to find a suitable solution to the problem left 9 of the ten teams in agreement about hosting a non championship race. It was only because of Ferrari's refusal to go with these plans that this alternative failed to take place, although it was stated that Mosley had informed Mr Martin, the FIA's most senior representative in the USA, that if any kind of non-championship race was run, or any alteration made to the circuit, the US Grand Prix, and indeed, all FIA-regulated motorsport in the US, would be under threat". On the same day that Stoddart's version of events was published, the FIA issued a statement denying that Mosley had made the reported threat or that any such conversation had taken place.