General Motors (NYSE:GM) announced Monday that it would be closing down five of its facilities across the United States, ceasing the production of six of its sedan brands, including the Buick LaCrosse, Cadillac CT6, XTS, Chevrolet Cruze, Impala, and hybrid-electric Volt. GM will also lay off some 15,000 workers. The car manufacturer claims that through these cost reductions, it will achieve $6 billion in savings by the end of 2020.