Although I've long been fascinated with automobile aerodynamics, I don't have enough knowledge and interest to speak of the science, so I usually don't bother parroting what's accepted as common knowledge here.
I know there's been prior debate of the subject of the template I haven't read, so if this information has been discussed to death feel free to disregard this post; but I feel like information, pictures, and videos on this
page would be relevant to the discussion.