Kia Motors on Wednesday unveiled its new K9 large sedan, which is packed with sophisticated technologies developed together with affiliate Hyundai Motor. Kia spent some 500 million dollars since 2008 on developing the most luxurious model in the K-series. At the launch in Seoul, Hyundai-Kia Automotive Group chairman Chung Mong-koo said all state-of-the-art technologies have…