Intended to help escape from a submerged car

[Old Techo]

Ford glass breaker

[warrenk]

I bought an "old fella" handle for my low to the ground Cobra Concept.  Acts as a handle to get out of the vehicle, can break glass and cut seat belts. 
Although the one Ford patented maybe be able to break glass, but can it cut the seatbelt.  No good breaking a window to get out if your seatbelt catch is jammed. 

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[Frank and Brenda]

We've had one of those handles in the car for a number of years, when Brenda's back was really bad she often needed it to get out of the commodore
It hasn't been needed in the 4WDs we've had

[Old Techo]

I think the main point here is the glass-breaker is built into the car.

It doesn't have to be procured and can't be lost.

Also I assume there are 2 of them?

Only one window needs to be broken to allow the car to flood and permit the doors to be opened.

[A'van]

You could use the old steering wheel locking bar. it was also good as weapon if you got attacked.

Cutting the seatbelts is a another story.