This weekend is the second round of European Le Mans Series: The 1000 km of Spa. Lemans.org had a short piece on Pescas experience in 1973:
http://www.lemans.org/en/news/Spa-1973-In-the-words-of-Henri-Pescarolo_3536.htmlHenri Pescarolo: "Given the length of the circuit, you can only do a few laps in testing. We did not have much time to understand the behaviour of the car and make the appropriate changes. I always loved the fast corners ... and Matra 670B too. In the Burnenville curve, we passed 300 km/h on a rough surface, we were kings ...but the chassis was incredible.