As it happens I was watching a TV-series yesterday that has this exact plot/theme, not exactly HN material as it's Sci-Fi but anyway: The world loses power globally. Anything using power is dead. Planes, Cars, batteries, etc.
Not sure if it's a hit that will last but I found it entertaining and it made me think a bit, what would I be able to do to survive something like that? What would my plan be?
I'm not about to go all doomsday prepper but I guess it does not hurt to at least have an idea.
Or just be prepared like in the story, preparing for the worst as we usually do when designing redundant solutions.