So how do you like this combo? iPad 3G (with integrated GPS card) + Yamaha tank bag.
I haven't purchased one of the turn-by-turn apps yet, but I think this is going to be really cool. There is talk that Google is going to release a turn-by-turn navigation app for Google maps soon as they have for the Droid. The touch screen works beautifully right through the plastic on the tank bag. Zoom in & out on a map with a simple pinch. Drag & move with ease. It's impressive.
So far, 10 hours after having this thing, we're loving it. I'm sure next gen devices will be better (think iPod version 1.0). But I believe tablets are going to be world-changing. Say "so long" to college textbooks.
I don't see this displacing the Zumo 550 just yet because for water-proofness, but could happen with a proper case. If I were Garmin, Magellan or Tom Tom, I'd be nervous right now. There are perfectly adequate nav apps online for iPad for $29 right now. And Google is now "Walmarting" all kinds of software companies with their offerings.
To HappyPuppy's point, you're going to see car mounts and motorcycle mounts for this thing within weeks, I'm guessing. I'd really, really like to see one for our boat - waterproof and robust. Nav and weather apps will displace very expensive marine devices with ease.