"A side-by-side comparison of a standard flat driver's side mirror with the
mirror designed by Dr. R. Andrew Hicks, mathematics professor at Drexel
University. With minimal distortion, Hicks's mirror shows a much wider field
of view. Hicks's mirror has a field of view of about 45 degrees, compared to
15 to 17 degrees of view in a flat mirror."
Math: Is there anything it can't do?
Of course it is illegal for the mirror to be installed by a car
I blame the mirror lobby.