Hi Sue - interesting dilemma. I had something perhaps peripherally related (way LESS drama than your scenario), but perhaps something that can apply.
Snowbound/stuck in traffic on interstate.
http://forums.equipped.org/ubbthreads.ph...true#Post217978The maddening thing for us was, with a nearly full gas tank, never turned off the car, never cold or in the dark, functioning radio, functioning smart phones for calls and Internet connection, we could get almost ZERO relevant information...we were within probably a half mile or less of an exit. Were they working to clear the roads so we could exit to surface streets and bypass the traffic jam and make it home? Were we going to have to resign ourselves to staying the night in the car?
We could never get any answer on that - no online news, no radio reports, even repeated calls to local and state police non-emergency lines (which were swamped) could give us any indication that any resources were coming our way to help get us off the interstate. The police of the city we were approaching the exit of appeared to have no idea that clearing a handful of stuck cars/trucks might open up the exit we could almost see.
So, getting that kind of information is really key to making your decision, but you may find that almost any kind of technology won't get you the answer you need. At least, that was my experience in this case.
Another time, years ago, during the '03 blackout, an AM/FM radio was all that was needed to get the right info. I was stuck in a subway car (above ground) and news reports eventually made it clear there wouldn't be any return of power in the near term - so I could make the decision to hoof it (and convince some people determined to wait for the next train there wouldn't be one).
Good luck in your planning
Dave