The janitor at the end was a nice touch.
I know little about bullet resistant glass. I wonder how many shots in the same spot it takes for failure? It looks like they got quite a few into a smaller area.
I would say not a great many, but for cars like that, I doubt they are intended to stick around once gunfire starts.
I have always been curious how many rounds even steel armor would take in the same spot. Even with the AR500 steel plates I have, 5.56 M855 rounds will nick the plate a little. I would be curious how many rounds it would take in the same spot to tear it up. With true AP ammo, it may not be that many. I remember as a kid wondering if concentrated 50 caliber fire could eventually penetrate tank armor.