South Korean auto exports increased by just 1% on a year earlier in June, with Kia experiencing a 10% drop and Hyundai an 13% rise. The U.S. remains a key export market, with shipments from South Korea to the U.S. rising 31%. That was the 11th month of growth, but represented a slowing rate of expansion. By contrast shipments by Japanese manufacturers including Nissan and Mazda fell 27% while German exporters including BMW and Daimler slowed by 3%. The South Korean producers may be too optimistic – U.S. sales of imported vehicles fell 7%, the third straight decline. That included a 24% d...