This is for anybody that still can't seem to do it. I did everything he did in the video(except I had a runner), and had four seconds left. This seems like the easiest way if you're by yourself. I could've even shaved a few more seconds off if I didn't crash and spin out a couple of times.
Edit: Just finished it with eight seconds left using this method. The only thing I did different was I didn't go through the tunnel. I went to the left like all of the other videos.
Edit 2: I should also mention that you don't have to go to the front to start the race. You can stand on the very tip of the bottom left corner, and it will start. That way you're a lot closer to the vehicle station. Standing there instead of the front can shave a couple seconds off of your time.