It's definitely there.. I was messing around on LeMans a couple days ago, 2/3 of the way down the main straight, and some random race car (Supra, I think) is keeping up with my Bugatti at 230+mph, I couldn't believe it. I think he eventually hit the rev limiter because he fell back before the turn. But drafting is the only way I could think of how he would still be there.. every other lap, they don't stand a chance of keeping up.