It's the moment we've all been waiting for. We now have a 64-bit version of the Google Earth Extension for AutoCAD and AutoCAD-based products. ...and there was much rejoicing.
Free Download of Google Earth Extension for AutoCAD and AutoCAD-based products
Starting with AutoCAD 2011 and AutoCAD 2011-based products (e.g., AutoCAD Architecture, AutoCAD Map 3D) you can now download and install a true 64-bit version. Of course the 32-bit version continues to exist. Simply select the installer that matches your environment.
Using the Google Earth Extension‘s simple wizard-driven interface, you can publish your 3D models from AutoCAD directly into the Google Earth application. The technology preview also allows you to import a Google Earth image into AutoCAD, publish your 3D model to Google Earth, drape a Google Earth image onto a 3D mesh in AutoCAD, and attach time span information to your model.
Keeping our technology previews current so the feedback continues to roll in is alive in the lab.