Ford Motor Company operated the Mahwah Assembly plant from 1955, producing 6 million cars in the 25 years it operated before the last car rolled off the line on June 20, 1980. At the time of its completion, it was the largest motor vehicle assembly plant in the United States. The Ford plant, along with other businesses such as American Brake Shoe and Foundry Company, helped contribute to the economic development of the town and its reputation for low home property taxes. The Mahwah town sports teams remain named Thunderbirds in honor of the Ford plant.