I don't know if I beleive that this car will actually do 0-60 in 4.8 seconds. I know that BMW is usually conservative in their figures, but from memory I think the Z8 weighs around 3500 pounds and has a V8. I don't see how dropping 100 pounds is going to make up for the loss of two cylinders in terms of acceleration! Obviously we are all speculating right now, but I don't think I buy that this car will be any faster than 5.2 to 60mph, in which case the difference is something like a quarter or third of a second. From what I've read, most of the extra oopmh is being added to the top end. Maybe they will just gear it insanely, but then you get into the whole "revving it like a vtech argument...(elch)"