Very nice race track.
After doing a little research, I came to realize that this is track is modeled, and probably fairly accurately, from the real-life Sebring raceway which is built around an airfield.
The graphical textures throughout this mod are of good quality.
This track is pretty long, very very wide open and somewhat fun to drive; the surface is a little bumpy.
On the downside, your vehicle can 'pass through' many structures (certain barriers, airplanes on the ground, etc.).