Scientifically speaking...it would take you an hour or so to make around 12-14 of those vgs and stick them with tape on the car.

They seem to work on this SUV? Similar in contour to your car?

"We are both most impressed with the AIRTABS. Stability and smoothness of drive were markedly better. Even in wind conditions or when passing big 18 wheelers, where the CRV shook and moved before, it was as steady as a rock with the AIR TABS on. Also we were getting 485-500 km ( 301 - 310 miles) to a tankful of gas on the highway. Our most effecient recollection from before, and we have over 155,000 km ( 96,255 miles), was squeezing maybe 450 km ( 279 miles) out of a tank. This 7- 10 % saving on fuel is awesome! Thanks for putting the AIR TABS on. We are already getting questions from curious family members and neighbours. Cheers."


https://www.airtab.com/Images/photoga...allery1.htm#AP

https://www.airtab.com/Images/gallery/CRV/sDSC05730.jpg

No thanks, I'll pass, for the reasons stated above.

If you find a third party who has performed a controlled-as-possible test, rather than just present testimonial/anectdotal evidence, I'd consider having a second look.

I think the vgs work BETTER on a rounded backend like an CRV than they do on something with a less drastic angle change.

You ARE the third party?

I just posted a fresh article at MetroMPG.com about the "Kardboard Kammback" described in this thread.

(And yes, I realize it's not technically a Kammback :) )

• MetroMPG.com: Kardboard Kammback: testing a partial boat tail prototype

I recognized the car on the right perfectly fine.

It also did 0-60 mph in ~14 seconds and could top 100 mph.

It deserves to be elongated, given rear wheel skirts and a longer rear taper, and have a larger 200+ HP diesel shoved in it. Would get the same or better FE, and performance to match some supercars.