I am not seeing AMS skies, groove, dynamic road, marbles, or shader updates. Also there is a massive invisible wall on the backstretch after the IowaSpeedway.com logo. This looks almost like a direct RF1 port? I bought over the JNS version of Iowa and it looks much better than this VHR one. Sorry for the average rating but that is what this almost is. Keep trying! :)
Edit: I've checked, and I found the "Invisible wall". It seems to be a seam on the wall that you only hit if you are REALLY riding the wall hard. Even if your gently touching it, it won't hit it. Is this what you are talking about?