Formula 1 authorities are expected to decide quickly on a McLaren appeal which could theoretically rob Ferrari's Kimi Raikkonen of his 2007 title if it is upheld.
Sources in the Formula 1 world say the appeals court of motor-racing's governing body FIA is likely to schedule a hearing as soon as possible so that the 2007 season can be definitively closed by November.
Raikkonen won the season-closing Brazilian Grand Prix on Sunday and was later confirmed champion, pending an appeal regarding alleged breaches of rules on fuel temperature by BMW Sauber and Williams.
Williams' Nico Rosberg finished fourth in the race with BMW Sauber's Robert Kubica and Nick Heidfeld taking fifth and sixth.
But their finishing positions were put in doubt after it emerged that the temperature of the fuel in their cars could have been more than 10 degrees Celsius cooler than the air temperature. This is against Formula 1 rules because cold fuel can give racing cars more power.
Race officials eventually decided not to disqualify the drivers, citing doubts over the measuring of fuel and air temperatures.
If the Sauber and Williams drivers had been disqualified, McLaren's Lewis Hamilton would have been moved up to fourth place, giving him the points he needed to take the title.
Thanks to his win at Interlagos, Raikkonen finished the season one point ahead of the British rookie and his Spanish team mate Fernando Alonso. Alonso was third and Hamilton seventh.
Race officials said the doubts about the fuel temperatures made it "inappropriate" to punish the BMW sauber and Williams drivers.
McLaren has said it intends to appeal against this decision.
