Hopefully this works. I've just put this up, so the video is not availabel yet as I type this.
The full track is four and a hlaf miles long, but they can break it into two tracks (called the east and west tracks) of approximately 2.2 miles each. This is the east track. I'm driving a Ford Focus ZX3. http://www.youtube.com/watch?v=WUtQCpWDQvE