Nevertheless in a long trip maps need to be continually downloaded using data hence the advantage of having maps on board.I remember reading that Apple's maps use drastically less data than comparable maps like google. It had something to do with the fact that they're Vector based maps, although I'm not completely sure what that means. Ha, ha!
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Well, maybe that's my problem. I always need re-routing. That's why I couldn't use Motion X. It too caches the route, but I always seemed to need mid-trip adjustments.Apple Maps caches the route so if you lose signal, it will still work, unless you need rerouting.