BMW 550i - high speed perfection, almost.

You'll hear a lot of superlatives when reading write-ups of the BMW 5-Series. It seems like it's always been that way. This big, confident sports sedan is all-new for 2010, and like its predecessors, BMW has hit upon just the right combination of agility, power and responsiveness to push the buttons of driving enthusiasts worldwide.That said, I am an enthusiast myself, and buttons are the biggest