The airfield was used by B-52s during the Vietnam era. That's why the runway (racetrack) is over 2 mi long.
Here are a few more interesting things that showed-up at the Arkansas Mile (9/29/18) -
Civic ran 128+
Geo Metro ran 118+
Didn't see any official numbers for the Stude, but I think it may have cracked 200 -
No idea...Bugati something...
One surprise was the amount of ZX-14s, which outnumbered Busas.
This H2 ran close to 200 MPH while we were there -