Drivetrain Vibration Issue This "innocent driver" ran over a mattress and decided to keep going. The ensuing jumble finally whipped around enough to put a tear in the gas tank. The subsequent lack of fuel is what finally brought this vehicle to its knees. It had still managed to drive 30 more miles decently with a 60lb tangle wrapped around the driveshaft. This genius complained that the vehicle had a "shimmy" when driving at high speeds. This is what the dealership found . . .