I think about my home city (6th largest in the US) with its singular interstate looping around our metro area - and Beijing has five of these ring roads on top of having a far more robust public transportation system and tons of scooter/bike usage still.
A single carmaker outselling all of US-made electric vehicles is just normal especially given the prices of these cars (down to something like $8000 USD) and the fact that they live in such dense areas that don't require you to drive 20 miles just to, for eg, get to a Costco or something. So you can have these ultracheap cars with maybe twice the range of lithium-powered golf carts and not spend a ton of money on it along with having 5x the population.