iTubeDevon has put together a very interesting reality check video, pairing up a real life video with Project CARS.
The video shows a lap around the Nürburgring Nordschleife in the Renault Megane RS both in real-life and the simulation.
Despite the fact that the Nordschleife in pCARS (like everything else) is still very much in pre-alpha stage, the track already matches up rather well with the real-life counterpart.