Looks like fun. Good idea. Image is a little flat in the color and contrast department, maybe because it is a little overexposed (good reason to shoot raw). The curved lines from the rubber in the road give a decent sense of motion, though I am sure someone more experienced than myself could explain how to really show the speed.
Great Idea and Great Shot ..9 for me
Though you could have titled it differently because
the title will grab the views attention just as well
as the picture itself. But great picture.
I personally would have preferred to see the cars front on as the driver can add some interest, I feel the DOF is a bit too great as I would have liked to see the background blurred out as it takes the eye away from the cars.
In scrolling down to vote, I find that I prefer this without the top half of the shot - it makes a nice shot as almost a square crop, focusing more on the two cars.