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The American Le Mans Series kicks off its 2008 season next weekend with the 56th running of the 12 Hours of Sebring in central Florida. The ALMS has long had the most diverse field of race cars of any major series in North America and this year it's getting even more so as the series makes a push for greener racing. This is the only series that has cars running on three different fuels; gasoline, ethanol and diesel all play a major part. In the LMP1 class, Audi is kicking off its third year runn

Over the past two years, Audi as well as Peugeot have proven conclusively that diesel-powered race cars have all the performance needed to win on the track. However, following the Laguna Seca finale for the 2007 American Le Mans Series, the future of Audi's LMP1 cars is cloudy. The company has yet to announce its 2008 racing plans and ALMS officials have gradually chipped away at Audi's advantage so that the LMP2 cars now regularly beat the R10. Further rule changes are on the horizon, as Le Man

For the past two seasons, diesel-powered racers from Audi and Peugeot have been the dominant force in sports car racing at Le Mans. For 2008, the Automobile Club de l'Ouest, which sanctions the twenty-four hours of Le Mans, has made adjustments to try and even up the competition. All the top category LMP1 cars like the Audi R10 and Peugeot 908 have their minimum weights set at 900 kg. The cars all use air restrictors to limit their power capability, but the gas-engined cars will get three percen