Audi have revealed their new R10 which will be diesel powered. Successor of the all consquering R8, expect the R10 to be a strong challenger in the Le Mans prototype series.

http://www.audi.de/audi/de/de2/erleb...sport/r10.html


So a straight diesel fight between Peugeot and Audi looming up for 2007.

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Audi will be running the R10 at the Sebring 12hr next year for the first time, and the Le Mans 24hr.