It's East Windsor Don. The photo only captures the bottom planks of the wooden fence, so it's kind of misleading. The picture is probably taking from the spectator stands, from the 4th turn side of the starter's stand. Gil is on the pit return lane facing directly toward the pits. The cars in the background are coming out of turn 2.
For a brief time, EWS had a 1/4 mile infield track, although I don't think I ever remember seeing anything race on it.
I really like that view of the car. Looks cool as heck just sitting there.