This from Google and Volkswagen of America look really interesting.

Basically, it's the in-car navigation system we've all seen, but with photographs instead of those line drawings we're used to. So rather than driving to that hotel or restaurant's block & then looking around, you could see the building on the screen.

The proof is, of course, always in the usage, but given the existence of Google Earth, GPS, and high wireless bandwidth, it sounds promising...