By following these guidelines and recommendations, you can efficiently convert Google Maps data to AutoCAD and incorporate real-world data into your designs.
If you use Civil 3D, you have built-in access to Bing Maps (similar to Google Maps). Type GEOGRAPHICLOCATION .
To help you choose the best conversion path for your specific project:
If you need actual lines and polygons rather than just a background image: KML/KMZ Import