How to shatter a car's tempered-glass window using a busted spark plug
The clip below comes from a National Geographic program called Hacking the System: Hack Your Car that airs on February 27 at 9:00 PM EST. It shows just what it takes to get through a car window and gives a handy hint on how to breach through tempered glass in a crisis. Scroll down to check out the video, but be sure to only try it on your own car.
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