According to the latest info I have Audi arecoming back with a petrol engine because in their opinion the ACO have legislated out the advantage the diesel engines have heretofore had. Wither (sic) then the Peugeot 908 then next year? Also the story in the press room at Silverstone was that the Audi R8 will have the diesel engine from the R10. Again, just rumours, but time will tell. Also Honda have their new LMP1 ARX-02 running in the ALMS series under the american Acura name, but it is still in doubt as to whether they are coming to Le Mans.