We've been doing mapping with sophisticated vehicles for a number of years ? we have vehicles with high-resolution digital cameras on board, and we drive roadways and collect imagery.
We bring the imagery from our vehicles back in-house and then we review it for spatial accuracy, for clarity and to make sure that we've captured everything within a collection zone.
What Microsoft is announcing today is only a small portion of what they have planned in the future - they have big plans and we're out there aggressively collecting the imagery.