That's Government Motors gratitude for you! From the Wall Street Journal: U.S. automobile giant General Motors Co. said Tuesday it plans to invest close to $500 million in its Ramos Arizpe plant in northern Mexico to produce a new line of engines as well as a new vehicle... "We estimate that these technologies allow for a 9% improvement in fuel efficiency from current engines," Lieblein said, adding that the investment will directly create 390 jobs in Coahuila state, where Ramos Arizpe is located. Another $215 million will go toward upgrading the factory's production lines to build a new vehicle for...