No, it's all on roads, you can download video's at www.ign.com just do a search for gran turismo 4 and click on the video's. theres a couple of good ones of that track, you can use any car on it so it doesn't class as a rally track.
I've thought about passing points on that course. I can't seem to find any decent ones. You'd pass just fine if you're overpowering your opponent, but many of the turns are so sharp and skinny, that it makes a better tarmac rally location than an actual race course.
The back section leading up to the start/finish line is wide enough for one (maybe one and a half) car to go close to all out. The section from the start is enough for side by side - barely.
