Conway was home to one of the world's largest school bus manufacturers, IC Corporation. The Conway plant was one of only two IC manufacturing plants; the other is located in Tulsa, Oklahoma. IC Corporation is a wholly owned subsidiary of Navistar International Corporation of Lisle, Illinois. IC was previously known as American Transportation (AmTran) Corporation and Ward Body Works. The company was founded in 1933. IC Corporation closed its plant and moved all bus manufacturing operations to their Tulsa plant in 2010, largely due to incentives offered by the city of Tulsa.