Autodesk has wasted NO time discussing the Google Earth feature missing from Civil 3D 2013. Instead they announced a new plugin from Autodesk Labs that they haved teamed with BING to bring in what looks like dynamic mapping. Video of Bing maps in Civil 3D
Download and install the new feature.
Change the work space to Planning and Analysis
Set drawing coordinate system
Click the Connect icon in the far left of the ribbon.
Now zoom to any location and watch the map update.
Looks very cool so far. Will check accuracy and look for Tin data this weekend.