If BMW's iDrive is anything like Audi's, they're out.
Garrett's post/link has Infiniti back in the mix.
Revised cut:
Out: Hyundai, Mazda, Ford, Audi (thanks for reminding me Brian), BMW (if iDrive is anything like Audi's), Acura
Still in the running: Infiniti (back in), Cadillac, Porsche, Mercedes
I was planning on hitting up a couple of dealership lots this weekend just to see what was there - Germain out at Easton, maybe Kelly BMW (just to confirm the iDrive hatred), and likely Toy Barn.
Keep the suggestions coming.