"the haze of distant factories"

Downtown Detroit is a major centre of economy within the United States, especially within manufacturing industries. Detroit is known as the world autmobile centre and is headquarters to America's largest car companies: General Motors, Ford Motor Company and Chrysler. There are around 4,000 factories in the area. The Ford Motor Company played a crucial role during World War II, producing the B-24 Liberator at a rate of 650 per month in 1944.