This reads like a hit-piece against ZipCar. The author doesn't give any advice, and merely retells a few anecdotes about people being stranded by parking a ZipCar in a place with poor cell service.
This isn't a problem I'd thought of before, but with the title "How Not to Go Off the Grid", I some advice. (The author doesn't even seem to offer the somewhat-obvious conclusion of "don't park a ZipCar somewhere without any cell service".)
Many years ago, a user filed a bug report that the timezone information we used for historical places in Indiana was incorrect. I don't remember exactly what the user was doing, but I think it had something to do with train schedules or something.
I did not fix that bug. (But I did learn that the 'TZ' database has this information, though I think 'America/Indiana/*' had been pruned out of the copy our JVM was using.)
This isn't a problem I'd thought of before, but with the title "How Not to Go Off the Grid", I some advice. (The author doesn't even seem to offer the somewhat-obvious conclusion of "don't park a ZipCar somewhere without any cell service".)