I saw something like this on tech tv a while back (back when it was tech tv to give you an idea). I don't remember if it was a google project or not. Anyway, I downloaded it and it was damn cool. I especially like how you can plot driving directions!

I just wish you could zoom closer on some area's.

1999 Silver Frost SVT #609 of 2760 Quaife, lightened SVT Flywheel, SPEC stage II clutch, removed resonator, k&n drop in - various other goodies too.