John - Los Altos 
2004 BMW 6 Series Convertible 645Ci 2dr Convertible (4.4L 8cyl 6M)
Beware "the convertible roof"
 Love to drive my 645 when the roof works which is not very often over the last year.  BMW can't fix it after 4 attempts on my nickel and I can no longer afford these repair bills.  Like some women, this car looks absolutely terrific, but don't even think about getting too close.  It'll cost you!  There are other cars out there that are a joy to drive, do the right thing - buy a coupe!