The windshield at it's current state is way too solid. If you hit a wall at 100mph, the windshield still would be intact and not bent at all even if the roof it totally bent out of shape. This is what i mean
The windshielf flattened out on that wall. It's not intact. If it was, it would still have the original curvature.
I watched the crash in slowmo and and the windshield didn't even touch the wall. And looking at the length of the engine bay and the angle of the windshield, you can see that the windshield couldn't have flattened by hitting the wall.
Here's what happens (form my point of view, I may be wrong): -The bottom of the A Pillars are getting opposite forces due the front being crushed. -The upper of the A Pillars are getting forces from the rest of the car with the same direction of travel due inertia. So, the bottom point where the A Pillar meets the roof (along with the base of the A Pillars, and if you look closely, also the pillar itself) would act as a hinge, making the upper part bend so easily. That would sort-of explain why windshields end up like that.
Even in extreme circumstances, it's actually what happens A-pillars are something car manufacturers first realized they needed to reinforce. So they did, very well. Now the main weaknesses are at the top of the A pillar, the anchor point on the firewall and the joint at the B pillar. In real life examples, the A pillar nearly always retains the original curvature.
I tested this again without the windshield and realised that it wasn't the windshield. I was going to say it earlier but our internet went down. I should have tested it with windshield off in the first place
