My name is Will Pittenger. I have been making KMZ sets for Google Earth for a long time. After I starting making those, I wanted overlays for my sets. I was unsatisfied with the accuracy of the images available at Wikimedia Commons. So I started making my own with Inkscape and uploading them. Then I needed a place for anyone that liked my KMZ sets and/or maps to find others. For a while, a simple blog sufficed. But, once I started getting requests, I knew I needed something better. This site is the result. You are welcome to set up an account. Some activities are for registered users only. Take your time poking around and let me know what you think.
This track's complex officially goes by the name "State Motorcycle Complex". I think you are supposed to tack "Victoria" onto the beginning. The track is part of a larger complex (hence the name). However, I left them out as they are all dirt tracks that can quickly be changed.
I did include (for the paved track) a map overlay, a polygon for the track itself, a path for pit road, and placemarks for each turn. You can get the KMZ here.