Photo journal: Rise and fall of mass production

Car manufacture ceased with the outbreak of World War II, but the auto manufacturers made good profits helping with the war effort, producing everything from jeeps to aircraft engines.

Mass production helped the Allies win the war, and led to further consolidation in industry.

The war also brought new social groups, like women and black people, into the auto industry, but also increased social tensions in Detroit.

Unemployment disappeared, and the UAW's power grew.