@Bobby I agree that not offering AWD on the Impala is a competitive disadvantage. The competitors in the segment that matter, including the Taurus and 300, offer AWD… so whether it really helps in snow/inclement weather driving performance, it’s ultimately up to the customer — and Chevy will lose out those sales to Ford and Chrysler.
However, it seems that you’re looking to AWD in the new Impala in order to increase performance. As @Z15 said, the market for such cars is limited. But even so, Chevy has a much better solution than a hotted-up FWD-based mainstream sedan that’s meant to be the luxurious flagship of the lineup. Chevy’s solution to those looking for a performance-oriented large (largish?) sedan is called the Chevy SS — and it’s pure RWD goodness. I’m sure you’ve seen us cover it already:
http://gmauthority.com/blog/category/chevrolet/ss/
@C6Raptor Obama Motors? Completely uncalled for:
http://gmauthority.com/blog/2012/04/no-the-government-does-not-call-the-shots-at-gm-de-fud/