If you use Civil 3D, you have built-in access to Bing Maps (similar to Google Maps). Type GEOGRAPHICLOCATION .
Open the DXF in AutoCAD. Note that KML data is often in WGS84 coordinates, so you may need to use the ALIGN command to move it to your local project coordinates. 💡 Pro-Tips for Accuracy convert google maps to autocad verified
If you need the actual lines (roads, building footprints) rather than just a background image, follow this path: Save your site as a KML/KMZ file. If you use Civil 3D, you have built-in