A video posted by Nio on Weibo shows some details of the ET9's wheels, showing that the Nio logo will remain stationary as the wheels turn.

The ET9 will be an executive flagship sedan, a market that has been largely inaccessible to Chinese brands, but in the age of smart EVs, an executive flagship has to be a tech flagship, William Li, Nio's founder, chairman, and CEO, said during a December 17 live stream of a range challenge with the company's 150-kWh semi-solid battery.

"So I think there's an opportunity for Chinese companies to get involved," he said.

This new model will become the global technology benchmark for smart EVs and lead the trend of smart EV technology, Li said during a December 5 earnings call.

Nio has started warming up for the ET9 in recent days, including that the model will be built on a 900 V high-voltage architecture, which will result in a faster charging experience. All Nio models support battery swap, which allows getting a fully-charged battery in about three minutes.

Yesterday, another Nio executive hinted that the company may unveil an in-house developed autonomous driving chip at Nio Day 2023.

Nio Day 2023 to start at 7 pm Beijing Time on Dec 23