I do believe that the detroit 3 are finally trying... which is more than I could say even 10 years ago... now if only they'd release a 44mpg (combined) diesel with 480lb/ft torque and 309HP for the Cadillac XTS like Audi is doing for the A6...
http://www.autoblog.com/2012/02/01/a...0l-v6-w-audio/