probably not a windshield as its safety glass and made stronger than other glass windows in the car. all side windows and back windows are made to be broken out for escape/rescue and easily will shatter.
I kicked a windshield out once
Actually, the front windshield is laminated. Two thin pieces of glass with a layer of clear flexible plastic (polyvinylbuterate) sandwiched in between. When not constrained, laminated glass is very brittle and breaks rather easily.
It’s used in the front windshield as a structural member of the cockpit and is constrained by the polyurethane adhesive not only for structural rigidity but also occupant safety to keep occupant in the cabin during a crash.
Because of the easier breakage and the relative inability to cleanly finish the edges (which are weaker) heat tempered glass is used in the sides. Tempered glass is amazingly strong when hit in the field, but very weak on the edges.
(I’ve hit tempered glass with a sledge hammer and not broken it. (the sledge is a hard but large diameter hit. A pellet is small enough to put very directed energy to cause the fracture.)
The nice this about tempered glass is that when it shatters, by design, it breaks into millions of small and safe pieces. The only real injuries are small pinprick type. It doesn’t shatter as much as it imploded and drops harmlessly to the ground.
I think for rear windows, they use tempered because some rear windows are very complex designs and it’s likely easier to manufacture plus maybe the shock of closing rear hatches might be better with tempered.
So, it’s not a surprise that there haven’t been any injuries. You sort of have to work at it to hurt yourself breaking tempered glass