Audi’s new R18 emerged as the fastest of the World Endurance Championship LMP1s, qualifying first and second for the 6 Hours of Silverstone. Both Porsche 919s ran almost a second behind the Audis, and they were visibly irked that they weren’t as fast in the moist conditions. Turbo problems on the Toyota TS050s held

[One of the world's biggest classic motor racing festivals, this year's Silverstone Classic was better than ever with over 1,000 historic racing cars taking to the track over three days of high-octane competition. Photo credit JD Classics]