Great discussion about the car folks. The he said/she said stuff is boring. J, D, and U rarely say anything new. It is funny/odd/predicable on this forum that most of the conversations are around CO2 and MPG. Personally I'm very impressed that GM engineers and designers weighed the pros/cons of those and blended them with a dynamic, smooth, and quiet "luxury" feel car. I dare guess that MOST do NOT want a high RPM reving noisy drive for a few miles and then back down to a "smooth and quiet" ride. That is not a good "UI" IMHO.