Another poster on this thread showed a car window breaker and seat belt cutter. I saw that on the Weather Channel (not a fan or a devotee of their lying climate change propaganda BS). So You Think You’d Survive show.
Should really buy one.
In a moment you go from things are great to the crap pile. I don’t know how I’d react or if I’d do it right but if you’re wrong you won’t get another shot at it. Ain’t none of us walking out of this life, we all are just trying to go as far as we can. Having a key and remembering to use it under stress is tough. Panic is what kills most often in scuba accidents. Quit thinking and drown.