Ideally, you will never find yourself in a situation where you have to break a vehicle window, but you never know.

This really awesome technique, however, can be used on any window (or on most types).

The edges of the piece of ceramic create scratches as it is impacting the glass, which causes it to shatter the glass. Ceramic's hardness is also an important factor.

One tip: In researching this, the consensus of online commenters was that this tip works best on vehicle side windows and not as well on windshields.

What do you think? Tell us below if you have tried this or have seen it done.