Tesla's Elon Musk says company's semi truck coming in September

Tesla Inc. plans to unveil an electric cargo truck in September, Chief Executive Elon Musk said Thursday. "Tesla Semi truck unveil set for September," Musk said on Twitter. "Team has done an amazing job. The truck would add to the ambitious production schedule underway at Palo Alto-based Tesla, which also is gearing up to build its widely anticipated Model 3 mid-market sedan. Musk previously had indicated that the semi truck was coming and that it likely would have some autonomous-driving features now included in Tesla's passenger cars.