First of all...that "guy from Chicago" that M-Punk heard from, is talking thru' his asshole. He obviously doesn't know his facts, hasn't driven anything better, or thinks others are stupid.
So. why is everybody arguing over an ignorant comment from a nobody?
I drive a 540i (second one now) and I know it's fast, but not that fast. Especially these days, when you just wanna compare acceleration and hp. new cars are packing them in so much so that the 540i will soon be left behind. That's when I will look for another car!