From the TRACK section by HACK.
This event will run on the INFIELD ONLY portion of the track.
While the infield only portion of the track isn't as "high speed" as the Roval that combines the use of the NASCAR front straight and Turn 2, the infield only portion is far more technical and a much better learning experience than the Roval IMO. Plus the lap times are relatively short, so you get to cram in 1/3rd more laps per session.
It's a great facility and track for those who live in the LA/OC area, relative short drive means you don't need lodging and the infield rental cost is hard to beat.