During its fourth annual Nio Day on Saturday — amidst performances by composer Shi Lei Chang and musician Wang Feng — the Chinese automaker revealed its latest EV model, the ET7 sedan. Nio Days have become de facto launch events for the company. At the first one in 2017, Nio unveiled its first production model, the ES8 EV SUV, followed by the ES6 longer-range EV SUV at the 2019 event as well as the EC6 EV coupe.