I drove the Rock a few years ago, but haven’t raced yet. The windshield cracking seemed real to me. I think 3 or 4 went that weekend. The main culprit seems to be the transition from the infield back to the banking.
There’s two basic lines: Go up at about a 45-degree angle onto the banking, which seems to really twist the bodies when the RF wheel hits the climb.
The other way is to turn harder left, stay on the apron for a bit and merge/blend into the banking. I don’t know which is the preferred race line, but I know the blend approach is easier on the windshields.
Speaking of, after you guys get done there, I have two new PPG windshields available to whomever needs them!