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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]
I wind up the windows and have this tool ready if we fall in the water.
I image that if you have the windows down, the water would flood the car with such force that you couldn't fight it and it would submerge the car more quickly.

Car Safety Hammer Set of 2... https://www.amazon.com/dp/B07MK2GNKD?ref=ppx_pop_mob_ap_share
[/quote]

Those hammers were designed for windows with air behind them, not with a wall of water that is pressing inwards on the glass.  The water pressure is going to act like a wall of concrete behind the window and keep it from moving even the tiniest bit so you have to create ALL of the force to shatter the glass from your arm projecting the hammer.  That's nowhere near enough force for the new shatter-resistant glass.  So, you might buy yourself a few seconds of additional time with air, but you will be trapped in the car.

[quote]Also, you can simply open the doors if they are unlocked[/quote]

Same with this idea.  The water pressure from the water will prevent you from pushing the door open.  It will be like the car door fell against a rock or the ground.  You can't push it out when there is much more force pushing the door in that you can create.[/quote][/quote]

Yep, those hammers aren’t made for water. Those hammers are made for dogs and kids trapped in hot cars. [/quote]

Those hammers aren’t even guaranteed to be effective on land. The problem is that the glass automakers use has become much stronger in recent years. They’ve done tests and modern laminated and tempered windows in new cars often can’t be broken by a regular person using those tools. [/quote]

I thought you are meant to open the window ?[/quote]

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