ELLABELL, Ga. — Hyundai celebrated the opening of its new $7.6 billion electric vehicle factory in Georgia on Wednesday by announcing plans to expand its production capacity by two-thirds to a total of 500,000 vehicles per year. The news came as President Donald Trump planned to announce tariffs on auto imports at the White House. Hyundai will be spared from those tariffs on its U.S.-made vehicles. Trump praised the South Korean automaker on Monday, saying its American investments are “a...