Last December, the electric vehicle company NIO hosted its annual celebration for customers in Shenzhen, one of China’s entrepreneurial hotbeds. The event, called “NIO Day,” mixes an Apple-style keynote address with the lighting and theatrics of a stadium concert. Among the evening’s highlights was a musical skit by the Blue Sky Chorus, a troupe of volunteer performers who are all NIO customers. In original lyrics they composed, the group catalogued their heartaches through the compan