Toyota Motor Corp. said Wednesday it will make an additional investment of up to $10 billion in the United States over the next five years, as the Japanese automaker ramps up battery production for hybrid and electric vehicles.The announcement was made as Toyota, the world's largest automaker by volume, opened its first overseas plant dedicated to battery production in North Carolina. It aims to bring its cumulative investment total in the United States, a key market, to $60 billion.Tetsuo Ogawa, president and chief executive officer of a Toyota unit in charge of North America, said the new…READ FULL ARTICLE