I keep a small cutter + window breaker combo in my car. [0] not sure how effective it would be, but it's small and cheap. is it reasonable to expect people to do this? I dunno, you're driving around at high speeds in a metal box. no matter how well engineered, some fraction of the time it is going to crumple in a way that the doors no longer work. of course, if you're going to account for this tail risk, there's a lot of other emergency equipment you should probably carry around for more likely events. I can't leave my house everyday with 200 lbs of equipment.

[0] https://www.amazon.com/AmazonBasics-Emergency-Cutter-Window-...