Isn't that the point then? its not a smooth GP track, its more like a mountain road, so its the perfect place to test road cars to their limits, if you can make a car fast there you can drive fast on any road. Suspension setup must be spot on to get a good time. A circuit setup would be scarily nervous and probably unbearable to drive, not something you would want when you have to last some 8 minutes of full concentrated driving.