I am making my own aeromirrors with covers. There are 3 pictures from the mirrors.
https://www.facebook.com/photo.php?f...type=3&theater
Frontal area is about 75mmx105mm=0,00788m2 vs regular Lupo 3L mirror (this is smaller than most mirrors already) 120mmx190mm=0,0228m2. That is 2,8 times smaller.
This design will lower your fuel consumption about 2-6% depending on the car. This version will go on sale if the tufts stays attached in the testing process. I will propably position this on the upper part of the side window. So window will still open but also there is less air there than in the A-pillar corner...
Tomorrow I will need better vacuum cleaner for vacuum forming because that is little bit out of shape. Thats fourth prototype made so far.