Mirrors, mirrors, I want to really have time for this one, so I'll work on it in a word doc. and paste it in.
Your convex, or spot, mirrors reminded me of a mirror I wanted to make for the formula car. We had a choice of a flat mirror or a fully convex mirror. If you look at my avatar pic, you'll see how tiny the mirrors are, for aero reasons.
What I wanted are now made, I'll have to go see if I can find them. I remember they were a german company and I gasped at the price.
What I wanted are mirrors that are flat on the inner two thirds (inner being the part closest the car, on both sides) and the outer one third curving toward the front to make the outer part convex in only one direction. If you can visualize it from my poor description, the inner part would give you the standard rearward view, but the outer third would drastically increase the wide angle view, even if a bit distorted, so that you had a panoramic view up to the point your periferial (I must learn to spell that) vision takes over.
The more I think about it, I may have seen them on Suncoast's site.
Okay, they are called aspheric mirrors. I'm not sure I like the sound of that.........
in any case, they don't seem to be available in the us, but this link lists euro Porsche part numbers for the Boxster:
http://www.toolworks.com/bilofsky/boxster/mirrors.html