Have you ever asked yourself, how game circuits are realized? The crew of Turn 10 shows us some details about the development of the upcoming Forza Motorsport 4 racing simulation. The following video shows how the track of Hockenheim was measured with GPS and how the track is then modeled into 3D. I’ve found it very interesting especially due to the fact that the real and virtual images can’t be really determined on the first sight. Let’s hope that the new Forza Motorsport 4 game will be as excellent as the previews in this video…