Pottys = spectators, taking the ring out we have the following top three left: Indianapolis Motor Speedway (infield can be used as a road course) could be an Indy car coming as well. Circuit de la Sarthe, maybe we'll see the C6 along with it. Shanghai International Circuit, I think the F2s race there and would be another proper F1 track.
In that ISR video where they interview Gjon (it's posted in one of the other threads that's being discussed regularly atm), there is definitely a 'generic' Indy in the track selection menu.
Never have I seen the outside of a portable toilet colored brown, until today: http://www.racermagazine-digital.com/racer/201209#pg94
Think your right with Virginia International Raceway , keep noticing them at that track in iRacing and thinking the same thing .
From one of my favorite unknown drivers Tony Adomowicz or something like that hehe, just search for Tony A2Z and you will find him.
Heheh, you are correct seeing as that shot is from Le Mans in the morning as the sun was coming up As far as being an unknown, he wasn't a mainstream name like some of the other drivers out there at the same time, but he was one of 2 drivers from the US at that time to have a top international license. BTW, he is also one of the few who have raced both the 512 and the Porsche 917.
This photo shows the use of multiple layers of detail on the track. The potty that is really far away from the track would be not so detailed. The potty that is in paddock area and close to the cars would have alot of detail.