There is a way to export your model to google earth, allowing you to open the GE application and see the model within the GE interface. It would be interesting to be able to attach the GE 3D data directly to the MS model, and allow you to clip a certain area or even mask part of it (for example to remove roads or buildings in the GE model that are planned to be demolished in the new 3D design. Now if you export to GE it is added on top op any other existing geometry, making it impossible to use it if there is allready a model in the same place.