China doing a massive ban-change to vehicles wouldn't be a first. Friedman wrote about their policy shifts in Hot, Flat, and Crowded. China has implemented chan

China doing a massive ban-change to vehicles wouldn't be a first. Friedman wrote about their policy shifts in Hot, Flat, and Crowded. China has implemented changes to vehicle emissions in just a few years that took the US decades (e.g. unleaded gas). So, okay, they won't ban cars outright, but it isn't impossible to imagine other scenarios that would be impossible to imagine the US doing in the same time period.