Side and rear's are heat treated and will shatter with any stress if the window has a flaw such as a nick or scratch.
Front windows have been sandwich type since the 20's/30's. The sandwich will actually strip the jacket from a Hollow Point slug. I have seen targets that were placed in the front seat and when shot at through the windshield, two holes appear in the target. One round and the second is usually a "Keyhole" shape. Lower powered rounds will often ricochet off the windshield even though they will make a big splatt. This happened to me once on Portland, OR freeway. Some guys were trading shots on the other side and a stray hit my winshield. Lots of glass but no penetration. VERRRRY LUCKY!!!
My definition of Gun Control--- A steady grip and hitting your target.
"In God we trust, all others are suspects."
"If I shoot all the ammo I am carrying, either I won't need any more, or more won't be of any help".