Mexico’s automotive manufacturers ended 2017 on a high with a 17% rise in exports vs. a year earlier in December, resulting in a 21% rise for the full year. Industry association AMIA forecasts growth of just 3% in 2018. That may reflect concerns about the future of NAFTA negotiations. The round of negotiations starting January 23 will need to make significant progress on automotive rules of origin to avoid a U.S. withdrawal. General Motors and Fiat-Chrysler were the largest exporters, accounting for 27% and 20% of vehicles shipped respectively. Both have grown rapidly as a result of high...