This live feed is at the Circuit de la Sarthe for the 24 Hours Le Mans 2011:
Le mans 24 Live
Le Mans is a race where up to 85% of the time is spent on full throttle, meaning immense stress on engine and drivetrain components. However, the times spent reaching maximum speed also mean tremendous wear on the brakes and suspension as cars must slow from over 200 mph (322 km/h) to around 65 mph (105 km/h) for the end of Mulsanne in a short distance. Downforce in the era of Group C cars helped braking to some degree but presently cars are tending towards low downforce to seek higher speeds in the face of power limiting regulations. Le Mans was most famous for its 6 km (3.7 mi) long straight, called Ligne Droite des Hunaudières, a part of the route départementale (for the Sarthe département)
Speeds on the straight reached over 400 km/h (250 mph) during the late 1980s, and the combination of high speed and high downforce caused tyre and engine failures, as this circuit was extremely hard on both tyres and engines before 1990, less so in 1990 and beyond. Due to safety concerns two roughly equally spaced chicanes were consequently added to the straight before the 1990 race to limit the achievable maximum speed. In 1990 FIA decreed that it would no longer sanction any circuit which had a straight longer than two kilometres.