Bing Maps is AMAZING! You can zoom in further on the test track in "Aerial" view. Which kinda shows the whole thing. Or, you can go to "Birds Eye View" and it will take you as close at 25M above ground with a clear picture! The test grounds are labeled too along with the track names!
Check it out!
* THe link takes you to Milford in the "roadmap view". If you scroll to the left a little on the map, you will see the GM Proving Grounds Labled. You can check them out in Aerial, or for a really up close look, birdseye.
http://www.bing.com/maps/#JnE9eXAuT...lN2UyOC45OTg1MzE4MTQwNTE4JTdlLTExOS41MzEyNQ==