 I bought this car because I wanted to know what it was like to drive on the autobahns of Germany at speeds they were intended for, and the 650i lets me do that.  I haven't had to pull over to the right lane for anyone yet.  The acceleration, whether starting from a stop or at 100 mph, pulls you into the back of your seat.  Merging and passing is effortless.  The car grips the road at top speed (157 mph), around corners, or even on wet surfaces.  It makes you feel almost too safe.....  I used to be a Mercedes guy, but I have definitely switched.  This car drives so nicely and smoothly, has such a simple elegance inside, and turns heads because of its awesome exterior.  I am 100% satisfied!