It’s race time: At more than 300 km/h, the Porsche 911 RSR hurtles down the D338 road from Le Mans towards Tours. In the two chicanes, which are closed off for everyday traffic and are a favourite spot for speed cameras, the ca. 515-hp GTE sports car takes the kerbs hard. Then, as fast as possible through the Mulsanne Corner and Indianapolis to the famous Arnage – the slowest passage of the 13.626-kilometre Circuit des 24 Heures. Exiting out of Arnage, the driver hits the throttle early, and now needs every ounce of courage and experience. In a few seconds, the Porsche Curves loom into sight. Five ultra-fast direction changes that are both loved and feared by drivers, and represent the most spectacular section of the French endurance classic.