This is a useful utility that has been in Revit for a little while, available to Autodesk Subscription holders only by download from the Autodesk Subscription Centre.Users can use the plugin to import a Google Earth image directly into Revit. Once the image has beeen imported you can sketch over itas a guide for the placement of your model after which you can either export your model as a KML//KMZ file or publish directly to Google Earth and it will appear in the correct location in Google Earth.

Image imported from Google Earth allowing user to sketch their proposals in plan on the site:



Image exported back to Goole Earth: