South Korean automobile production surpassed the 1 million mark for the first time Thursday. The nation's automakers said production since the start of the year totaled a record 1,000,660. The tally is expected to reach 1.09 million vehicles by year's end, compared with 979,739 vehicles in 1987, they said. Hyundai Motor Co. produced the most vehicles, 594,645, followed by Kia Motors Corp., with 225,267, and Daewoo Motor Co., 150,047.