The drivers I talked to said it was a very technical course. They said there needed to be more run-off areas, and they would have liked it wider. It looks like it's 4 lanes wide to me, maybe 5. There was a lot of passing where we sat, turns 12, 13, 14 (I think) right before the straight in front of pit road.
The Datona Prototypes must have passed the GT cars 50 times in that area. The IRL cars didn't pass as much. A few drivers tried to force the pass and ended up in the kitty litter. Only twice did I see anyone hit the air fences. I'd much rather have a race without cautions, and these had very few.