Hehe yeah I thought so too after seeing that were only doing the old Nordschleife without the gp part!I bet one race will last 4 laps, because I can do laps quicker than 6:30 (not telling how much quicker). So if you multiply 6,5 minutes with 3 laps, you'll end at 19,5 minutes, so the race would take another lap to its end.
Looking forward to this!