Nice mod. I've tested it with both karts and small cars and it feels really good.
I have only found a couple of things to improve, such as the AI, which usually crashes against the wall and some FPS drops (I really don't know if it was my problem, need more test) . Also maybe some more ambience such as advertising or lights to give it more atmosphere and not be so dull.
As a recommendation, perhaps a longer description and some photos will make more people interested in this interesting circuit :)
Nice job mate