Car windows are made to be reliable and withstand damage during an accident. However, if you ever get stuck inside the car and your doors are jammed, you can use a spark plug to break the windows. You would ask why a spark plug works better at breaking a window than a hammer or any other object.
Does a fragment of spark plug actually break car window glass
How hard is it to break a car side window from the inside? - Quora
Does a fragment of spark plug actually break car window glass
This is why its so important to keep your spark plugs maintained! #aut, spark plugs on exhaust
Breaking a window with the porcelain of a spark plug, without the
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You keep telling me spark plugs easily break a window but these finick
Spark plug vs regular glass? via @jjseries
This is why your spark plugs get stuck into the wire ! - - - #cars #tr, Spark Plug