Ever since a similar event (with no fire) had a child trapped in the back of a car following an accident, I have kept a fully serrated Spyderco rescue type knife in the console of my truck (in addition to my EDC). The knife there now is the Spyderco Assist 1 complete with glass breaker, and a Benchmade Rescue Hook.

This is an unfortunately sad story, but that's the consequence of a society where knives are viewed as weapons rather than as tools.