(AP) — A state trooper was dragged several miles by a car hauling a trailer after being knocked from his motorcycle along a Michigan interstate. Wolf was on patrol when a 72-year-old motorist hit the motorcycle while changing lanes sometime before 6:30 a.m., Michigan State Police Col. Kriste Kibbey Etue said at a news conference. The northbound lanes of the busy freeway were shut and expected to remain closed until late Friday afternoon as investigators reconstructed the collision and gathered evidence.