Ottawa Truck Corporation, a Kansas-based manufacturer of terminal/port tractors, was purchased by Oy Sisu Auto Ab (“Sisu”). Sisu designs, manufactures, sells and services heavy-duty, factory-ready, multi-axle special trucks. It offers rock gravel, road maintenance, crane, carrier equipment transport and roll demountable body trucks and timber trucks for transporting logs. The company also provides armored off-road trucks and special vehicles for military use. Sisu acquired Ottawa Truck Corporation to strengthen its terminal tractor market share. Sisu is based in Karis, Finland.