Related Articles – Cummins produces 2.5 millionth engine at its Jamestown Engine Plant – Five truck trend takeaways from May – April heavy-, medium-duty truck orders fell Results. Sit down with Troy Clarke, Navistar’s president and chief executive officer, to talk about anything and everything from Navistar’s strategy for grabbing more market share to developing … Continue reading Navistar CEO Troy Clarke on market strategy, new truck technology and meeting customer needs