Mercedes-Benz Vietnam plans to invest an additional 11 million euros (US$12.2 million) in its local operations this year, Saigon Times Online reported Sunday. The investment will be used to develop two new assembly lines, the news website said. It quoted Dirk Adelmann, sales director of Mercedes-Benz Vietnam, as saying that the firm moved 3,600 units in 2015, its 20th year in Vietnam. With a 50 percent…