You're kind of rambling on
You're kind of rambling on and not making a clear point. Instead of saying "Do something better and more original, GM" why don't you come out and say what you'd like to see them do. It took reading about half of this article to find your point, and even then, it's a mixed message.
"Forget this for a moment..." Well, no, you can't really forget that what they did was perfectly balance a car, use smart materials like cast iron for the differential (you explained why in the article...I don't get your point), and used acoustically laminated glass. These are called steps in the right direction. GM, especially right after being bailed out of bankruptcy, can't afford to take some huge risk on a space-aged new car that will cost them billions to make and just hope people like it. You have to build towards that, and that's exactly what they're doing.
Honestly, what did you expect?