ZHAOQING, China — Xpeng Motors, a Chinese electric car start-up, recently opened a large assembly plant in southeastern China and is building a matching factory nearby. It has announced plans for a third.Another Chinese electric car company, Nio, has opened one large factory in central China and is preparing to build a second a few miles away.Zhejiang Geely, owner of Volvo, showed off an enormous new electric car factory in eastern China last month rivaling in size some of the world’s largest assembly plants. Evergrande, a troubled Chinese real estate giant, has just built electric car factories in …
