[skyking]

I would imagine they used those very expensive wind tunnels on the insight. Good for them, we don't have one.
do A,B, or C above represent anything any of us will drive? Give that up, you have an axe to grind.
Does some form of wake reduction? Yes, it does. In that vein, fineness and attached flow, and curves that behave well in the yawed environment do. We don't drive in wind tunnels.
Take a look at the airstream trailer shape. Those huge radii work well from any angle. If you've towed many travel trailers, large box trailers, it's things like that you begin to appreciate.