Let the hive mind of Engadget get that for you.
"I am trying to configure out a really dumbed down and intuitive PC for my grandmother. She recently had a stroke and while she is under my care I would like to repurpose a laptop for her to surf and email her children. Anyone have any experience with what input devices and UI's are really understandable for the over 80 crowd?"
As for the other cars mentioned, even though they are high volume will the people buy them? I don't see much faith in the basic American car right now outside of a few models. They don't compete with Japan, and now Korea. At least with the CTS you know there is demand because the car is proven.