What? It's not just merging the different datasets into models, it's an complete accurate 3d model of terrain from C3 Technologies (now owned by Apple, btw), th

What? It's not just merging the different datasets into models, it's an complete accurate 3d model of terrain from C3 Technologies (now owned by Apple, btw), they take thousands of low-altitude photos and do a photosynth-esque reconstruction.