diggertoo 
2003 BMW 5 Series Sedan 530i 4dr Sedan (3.0L 6cyl 5M)
BMW 530i - You gotta drive one! 
 Purchased used in great condition.  The suspension system is incredible.  The car feels like it's glued to the road and is the smoothest and most comfortable riding car I've ever driven.  With a bad disk in my back, the lumbar system can be adjusted to make even longer trips very comfortable.  The air vents in the dash provide circulation throughout the car, without hitting anyone directly in the face.   And the sound system... if you close your eyes you would swear you were live at a concert.  The sound system with 10 speakers and 2 subwoofers is that good and the list of other useful features could go on and on.