[OzzyOsbourne]

Are you sure? How do you know it is not an image processing/edge detection algorithm running? If they were indeed constructing a 3d-model, I'd be interested in seeing it, even if it is a low-poly approximation...

[Stratoscope]

I didn't have the reference handy when I posted, but here is some info about how they use the lasers to make the 3D model:

http://maps.google.com/help/maps/streetview/learn/turning-ph...