Friendly reminder that measures like this unevenly affect people in different social classes, because those who are well-off can just buy two cars and be completely unaffected.

To that end Beijing also implements a car registration quota per year where applicants are randomly picked

I'm not sure it's so easy to buy second car in Beijing. Anything is possible if you are very rich, but that doesn't matter if there's a 1% more cars instead of 50%.

This is done in Sao Paulo since 1996 and yes, people have two cars, usually middle class and up.

https://en.m.wikipedia.org/wiki/Vehicle_restriction_in_S%C3%...

Exactly, the prototypical example has implemented it is one without democratic elections and so has no risk of being voted out of office.