Thanks Masscot, but it's not Camino.
Uuurggh. I swear, trying to find this track will drive me insane. I used to drive it regularly, but because it's fictional, the name has just gone AWOL from my brain.
I remember that it was updated some time in the last couple of years and someone posted a comment saying there was stray mesh that looked like an oversized cow... which was actually the billboard shaped like a bull with horns, sitting on the hillside above the last long straight. I've searched for the comment too - and I can't find that either!