2010 BMW 550i Gran Turismo First Impressions

Woodcliff Lake, New Jersey -- We just spent a day touring around New York State in BMW's brand spanking new 5 Series Gran Turismo. Normally, we'd get right to the "what's it like?" But this time it feels like we need to start with the "what is it?" Because not only is it another genre buster, it seems also to straddle territory already occupied by other BMW products.