Want to instantly shatter a car window? Just throw a tiny porcelain bit

If I had to pick a hammer or a tiny piece of porcelain to shatter a car window, I'd probably think nothing of it and grab the mallet. NatGeo proves me wrong. A little itty bitty piece of porcelain chipped off a spark plug does much more damage to a car window and is so much more easy to use too. Just chuck it at the… » 2/21/14 2:01am 2/21/14 2:01am