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Use a Headrest to Break Your Car Window in Emergency Situations.

No matter how safe of a driver you are, accidents can happen. The headrest of car seats is deliberately kept detachable and sharp so that it could be used to break open the glass of a vehicle in case of fire or emergency. If you’re ever in an emergency situation where your car is partially submerged in or filling up with water you can use a headrest to break your car window. The car's glass too is kept easily breakable from inside. Doing this will not only allow you to get out through the window, but also makes it easier for you to open the door – since if submerged, it helps to equalize the water pressure on both sides of the door. Very few people know about it and thus can't save themselves in case of emergencies.

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