XFi: don't forget the folding side mirror option.
I deleted my passenger mirror, and installed a folding one on the driver's door, which I leave tucked in on the highway, and deploy for city driving (or congested freeway driving):
Peakster:
Neat video. Too bad about the GS "branding" at the end!
I watched it after you first released it, and recall it was fairly close to the same result I measured on my car:
Side mirror drag & FE effect - quantified