Very interesting Rick. I probably saw most of these when they were released - alhto I don't remember them - but they may have been factors in my long-term interest in the 928.
The 63 degree blind spot reference is interesting - less than 20%. My SUV certainly has much more than that. In fact that is one of the biggest issues I have with modern car design. Somehow having to add a rear view camera because you can't see out strikes me a design defect. If you continue that trend to its logical conclusion we'd only have camera views all around; mind you, such a system could adjust for fog, night, oncoming cars, etc.