mdh 
2006 BMW M5 Sedan 4dr Sedan (5.0L 10cyl 7AM)
Best Luxury Sedan on the Planet
 Delivered October 2005 on the first shipment to the US, I'm at over 25,000 miles.  The iDrive and SMG take some time to get used to - really about 5,000 miles or so.  Once you get the hang of the SMG, it is just a blast.  I never tire of revving this engine, especially on downshifts.  The power is just astounding, especially on the highway - there are only a few cars sold today that compare.   I've put on lightweight BBS 20" rims and Michelin PS2 tires, and installed H&R springs and spacers.  With these mods, the car handles like a go-kart, but still rides well enough to take 5 people out to dinner.  If you're looking for a Porsche that seats 5 people, this is your car.  Amazing!