Agreed, this is a worthwhile exercise.

I've never entirely trusted or cared for power windows and door locks. Mostly because I buy decent used cars and drive them to the very end of their lives. So, all those gewgaws are just more things to go wrong. Crank windows always work.

The other thing is, when the electrical system shorts out, there you are, contemplating an entirely different set of "options."

That said, in my car, there's usually a tire iron somewhere behind the seat. And, always a Leatherman on my belt, that would break a window easily if held (while closed) in a hammer grip.

I've noticed stores flogging a silly hammer thing with a semi-useless seat belt cutter for about $20. It's supposed to help you get out of a vehicle if you're trapped. Why not buy a real hammer (or better, a hatchet, which is my choice), drill a hole and install a lanyard, and have a really effective tool for half the price?