yeppers, no 6 speed manual. The A6 has a "manual" mode, but IMO it's a toy. Oh, the new 6 speeds in the vettes and GXPs are not t56 trannies. They came out with a different one that's supposed to be smoother. I had 3 LS1 cars with t56s and never had problems with them. Maybe it's cause now with the LS3s their pushing well over 400HP from the factory.
I think it pays at the pump because it's a big 4 door car. The corvettes are a lot lighter and surely more aerodynamic. I was getting between 25 and 28 mpg driving my corvette to work and got up to 33mpg on one trip. Not too bad for a low 12 second ride. Sadly there wasn't a back seat.
I can't remember if I posted it, but I sold it about the beginning of March.