Corrected entry: When Mr. Incredible slams the car door and breaks the driver's window, it is seen to shatter and fall out of the door as regular window glass would. But automobile window glass is manufactured so that it does not separate into pieces even when shattered.
Garlonuss
10th Dec 2004
Correction: You're thinking of the windshield, which is usually a laminated glass preventing it from falling apatr and providing better safety. The side windows, on the other hand are not always made that way. I know for a fact that my brother once accidentally shattered the car door window in our old car and it most definitely fell to pieces. It's tempered so that it doesn't make the dangerous edges that other glasses do, but it falls apart to make it easier for rescue workers to get inside the car after an accident if the door won't open.
Garlonuss ★