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George Hayes's profile photoA.J. Cardoso's profile photo  Just another map project though you might find interesting.

The data and images need to make the maps is available on government websites. It happens to be free. The harder part is writing the software to combine the road data and images together. 
Natural business practice. If you think you can, why not? Nothing wrong with trying. As long as Google continues to improve upon maps, they have nothing to worry about.
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