However, this will be tough challenge: The American Le Mans Series organisers are attempting to stop the revolutionary Audi R10 TDI prototype’s winning streak by making the competition even more new concessions. At Road America the LM P1 Lolas entered by the Dyson team can race with 65 kilograms less than the Audi R10 TDI. Furthermore, from the following race at Mosport, the Dyson Lolas will be granted a five-litre larger fuel tank. That’s why Audi’s further participation in the American Le Mans Series is under discussion. The Audi Sport engineers have calculated with computer simulation that ten kilograms at Road America is worth at least two-tenths-of-a-second per lap. Despite being deeply disappointed about the random decisions of the IMSA organisation, the Audi Sport North America team would nevertheless like do everything in its power to achieve a good result also at Road America. The layout of the 4.048-mile circuit approximately 60 miles north of Milwaukee should suit the R10 TDI. It is one of the most fluid and fastest on the calendar. The predecessor of the R10 TDI, the R8, was in a class of its own at Road America and remained unbeaten at every race there between 2002 and 2005. Last year’s winners Frank Biela and Emanuele Pirro are only two-points behind third placed driver Andy Wallace (Dyson Lola) in the overall standings despite having sat out three races. Dindo Capello won in 2002 at Road America, while the circuit in Wisconsin is new territory for Allan McNish. The race starts at on Sunday, 20 August at 2:00 p.m. local time (9:00 p.m. in Germany) and runs over the classic distance of 2:45 hours.