GM just began the process of exiting the South Korean market (GM)

Joe Raedle/Getty Images GM CEO Mary Barra put GM on notice after the carmaker reported Q4 and full-year 2017 earnings. The carmaker has shown no hesitation about leaving markets where it can't maximize its return on investment. GM sold underperforming Opel, its European division, last year. General Motors will close one of four vehicle assembly plants in South Korea, and will decide the future of the remaining operations within weeks, based on the outcome of talks with the government and labor u...