The IMSA WeatherTech SportsCar Championship series finale, Motul Petit Le Mans, will feature 54 cars, the maximum number that Michelin Raceway Road Atlanta can accommodate. The 10-hour race, set for Oct. 12 on the 2.54 mile, 12-turn circuit, will determine not only the full-season champions in every category, but the Michelin Endurance Cup winners as well.