Further to this if you have an old spark plug at home, crack the white ceramic part off the spark plug with a hammer and the little shards (also known as ninja rocks) will break glass when thrown or hammered against the window.
They work because their ‘hardness’ is higher than the window glass and cause it to shatter. Also breaking a car window with a brick is much harder than it appears (i locked my keys in my car once a few hours from home, and it didnt work after repeated attempts).
Another thing (if your ever in the situation) car windscreens are designed to be pushed out from the inside, so if trapped just put your feet against the glass and push and it will pop right out.
Further to this if you have an old spark plug at home, crack the white ceramic part off the spark plug with a hammer and the little shards (also known as ninja rocks) will break glass when thrown or hammered against the window.
They work because their ‘hardness’ is higher than the window glass and cause it to shatter. Also breaking a car window with a brick is much harder than it appears (i locked my keys in my car once a few hours from home, and it didnt work after repeated attempts).
Another thing (if your ever in the situation) car windscreens are designed to be pushed out from the inside, so if trapped just put your feet against the glass and push and it will pop right out.