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With the American Le Mans Series returning to Road Atlanta this weekend for its flagship event, the Petit Le Mans, Audi has returned to take on the French. Peugeot, of course, won this year's 24 Hours of Le Mans after a multi-year battle with the diesel-powered Audis. So far, in the first three open practice sessions on Thursday, Peugeot's diesels continued to have a speed advantage over the Audi entries, with Frank Montagny setting the fastest time of the week so far during the night practice session at 1:07.912, three-quarters ahead of the second Peugeot, and the Audis also running third and fourth.

Earlier on Thursday, one of Audi's reserve drivers for the ten hour race, Mike Rockenfeller, conducted a backstage tour of the Audi paddock where the crew were preparing the cars for the first practice. This is back in an area that spectators don't get to see much of. As the cars were being taken out to the track, Rockenfeller went into the big tent behind the pit where the engineers were pouring over telemetry data on their screens trying to figure out how to make the R15 faster. Check out the videos after the jump.


Related GalleryAudi R15 TDI

[Source: Audi]