Police in Knoxville say a metal skirt became dislodged from a tractor-trailer and went through another vehicle’s window, killing the driver. The wind skirt broke off a truck on Interstate 40 at the Cedar Bluff Road exit and hit the vehicle yesterday. Police say the skirt went through the driver’s side window. The passengers maneuvered the vehicle onto an exit where it rolled to a stop. The driver was pronounced dead at the scene. The accident remains under investigation. The victim’s name wasn’t immediately released.