was acquired by DBG Canada Ltd., a manufacturer of parts for the heavy truck industry, in 2017, and DBG announced it would make Conway its United States headquarters. See also AmTran - corporate predecessor Navistar International - parent company References External links ICBus.com - official company web site Navistar International School bus manufacturers Manufacturing companies based in Illinois Vehicle manufacturing companies established in 2002 Companies based in Arkansas Conway, Arkansas Warrenville, Illinois Hybrid electric bus manufacturers Companies based in DuPage County, Illinois American companies established in 2002 Bus manufacturers of the United States Electric vehicle manufacturers of the United States