Interesting- drove two different bullitts at two different dealerships. Dealership one- great car but clutch vibration at termination of engagement and weird engine noise (like marbles rattling under hood). I just arseumed these were "normal." I would have bought the car but I wanted one in black. I go to another dealer who has a black one and test drove it- smooth as silk clutch and tranny and no "weird" noise. I purchased that one. Both had about 4 mi. Was the former just a normal variation or a POS out of the box?