If America's biggest automaker's crystal ball is working, the future of cars has way fewer cars. That's the thinking driving General Motors' major internal restructuring announcement, which came Monday. The company plans to stop producing many compact or sedan models, including the Chevrolet Cruze, Volt, and Impala, the Buick LaCrosse, and the Cadillac CT6. It will close at least three assembly plants that build those cars, in Youngstown, Ohio; Oshawa, Ontario; and Detroit. And it will lay off as many as 14,000 men and women, including about 8,000 salaried workers, along the way.