General Motors and the South Korean automaker say they will collaborate on new vehicles, buying parts and clean energy technologies. Automobiles, General Motors, Hyundai Motor Co, Alternative and Renewable Energy, South Korea, Electric and Hybrid Vehicles, Batteries, Factories and Manufacturing, Supply Chain, Prices (Fares, Fees and Rates) General Motors and the South Korean automaker say they will collaborate on new vehicles, buying parts and clean energy technologies. NYT > Business