Firebird opened in the early/mid 80's.
The red outline is actually the track we, (the SCCA & ASRA/NASA) use for our events. As you can see, there's a slight variation to the track configuration that we can use. (we normally use the straight section)
You can see the drag strip and the 1/4 mile shutdown line. The road course uses another 1/4 length of straight, out into the desert.
In the early 90's, Bob Bondurant moved his entire facility to Firebird, and the guy has alot of clout out there. Before he moved there, Firebird was just the track, that I've outlined. Now, as you can see from your excellent aerial photo, Bondurant has added several track configurations to the entire facility.
I've met and spoken to Bondurant on several occasions, and all i can say is this.....Bob Bondurant's biggest fan is Bob Bondurant.
Friday night. is open drag races. (anybody can bring their cars to drag race. Even family cars). So when we run on Saturday mornings, the entry onto the main staright is usually awfully slippery.
Firebird is my favorite track, compared to PIR (Oval and road course), Willow Springs, Vegas, Gratten, IRP, or Mid Ohio. (The last three are where I ran a Formula Vee back East). Maybe it's because I have a helluva lot more track time at firebird.
One major proble at Firebird though, is lack of shade. The beginning of the season, usually in September, the temperature can still be well above 100 degrees. Combine that with sitting in a cramped cockpit, wearing a triple layer fire suit, belacalava, helmet, gloves.........The Emergency crews are good at dealing with heat related emergencies.
I wouldn't be surprised if they built one out there.....