It looks like Audi winning LeMans and the ALMS was enough R&D for Peugeot.  Next year Peugeot will no longer be bringing a knife to a gun fight, and will be entering their own diesel.

One of the main reason’s for the advantage Audi had this year was the fact that their diesel engine was able to run two more laps per tank than the gassers.  An advantage they definitely capitolized on.

Source: Supercars.net

(I just wanted another reason to show the Audi R10 and team)