I left volume as was, as I'm not a fan of music during videos unless it adds atmosphere, as you would get in a movie, to highlight a particular scene.
Also, not sure why you didn't just finish video at about the half way mark once the yellow and black car had finished. Was it to show how the white car looked different to black car in your filtered view? If so, why not have AI race round in different white, black, blue, green, red, yellow, etc, cars to see how each colour shows up?
As far as sounds go, I didn't mind the wind noises (in low volume), and liked the tyre squeal under turn in and braking.