LeMans I appreciate you posting up these pic's.I had to follow this car to get these pic's.....Yes....I'm a BMW Prototype stalker!!!!! The exhaust note is wicked....very much higher pitched than the TTV8 in the 50i X6.Whoever was driving this car was really doggin it from the stoplights.....I really believe BMW has tuned the exhaust note to sound like a V10.I got some interior shots.....but the guy covered up the steering wheel and dash before he left the car (a well trained test mule driver) The balance of the interior looked standard X5.Thanks very much!!! PalBay