This chart surprised me a little. The cars were almost equaliy quick – the difference was just between 2 or 4 km/h. If I had to sort the cars, I would say Ferrari quickest, followed by Corvette and Porsche with the same topspeed and the Aston Martin slightly slower. Remeber these data come from the official speedtrap and I can’t tell if this is already under braking, etc.
The Porsche #79 again is slower and the Ferrari #71 seems to be quicker, but he did only 28 laps.