[aerohead]

Originally Posted by Focus-Ak

What do you think is the CdA penalty for this mess?

Attachment 20582

I wouldn't venture a guess,but based upon CAR and DRIVER's testing of a rooftop cargo carrier on a Ford Escort in 1981,a SWAG might suggest a 2-mpg loss at 50-mph.
And what we're looking at is probably a transitional,sorting-out technology,which will be miniaturized over time.