In California we're told to prepare for the large earthquake that is coming in our future. Since we spend a large amount of time in our cars, having all these earthquake supplies at home doesn't really help if you are out on the freeway somewhere.
To address that I put together a car kit that I could carry in my car all of the time. The purpose of the car kit is to give me enough supplies to get back home (assuming I'll walk there), and then once I'm at home I've got my earthquake supplies there to live on while I'm waiting for my FEEMA trailer :-).
I have mentioned it and people ask me to provide the list so here it is. The benefit here is also that people are welcome to submit PRs against this list if you see ways to improve it.
The goal is to be safe, reduce the load on first responders by taking care of as much as we can by ourselves, and to get though the immediate crisis so that we can get to work on the rebuilding afterwards.
--Chuck