Now that is a feature. I'd happily download my home town and run it offline always. Waiting for 3g cell reception to get the map to see where you're to go next is very tedious.

Awesome! Thanks for the tip.

In addition to that, if you're traveling a route, you can (at least as of a few Android versions ago) cache the list-view directions as well (though obviously not the turn-by-turn as no signal means it might not know where you are).

It's a life saver if you're traveling through middles of nowhere.