Apple has reportedly bought Sweden based C3 Technologies which has developed a 3D photo-realistic mapping product that has the potential to blow away the current version of Google Maps. C3 Technologies... More...
Indeed that was only London. Imagine what kind of work it would take to make a full 3d model of the world.
I'm looking around sanfran, and its the exact same on the Nokia site as it is on the c3 demo video posted, down to the artifacts on the bridge
Everything is done within a browser these days. It doesn't matter what operating system or platform you use.