Sales of imported cars in South Korea rose 2% on a year earlier in December. U.S. brands outperformed with a 10% increase, led by a doubling of sales by Cadillac. American brands also did better for the full year with a 10% improvement vs. 3% overall. The auto industry will be in focus in the KORUS trade negotiations in the coming weeks. U.S. exports to South Korea were worth just 9.9% of imports from South Korea in the 12 months to October 30. The U.S. will likely call for improved access to the South Korean market via relaxed import regulations. Despite the rise in December, total sale...