With the R18 e-tron quattro, Audi aims to write another chapter in its successful history at the Le Mans 24-hour race. A V6 DTi engine that generates over 375 kilowatts of power drives the rear wheels of this hybrid. The energy recuperated during braking feeds two electric motors which transmit extra power to the front wheels. But the competition never sleeps. Toyota wants to enter a hybrid model in the Le Mans race, too. Drive it! presents the two rivals.