I need to remember the name of the book where I read that, but statistically the people who buy Teslas produce more global emissions than others, simply on the fact that manufacturing a Tesla vehicle produces nearly 2x emissions as manufacturing an equivalent ICE, and the class of people who can easily afford Teslas engage in a lot of environmentally damaging activities like excess consumerism, lots of traveling, etc. versus the people who can only afford to keep using their ICE car instead of throwing them away to buy a Tesla.
It's one of the reasons why despite the boom in EV adoption, global emissions are also skyrocketing with them. So EVs alone won't save this planet. In fact, according to that book, if we were to replace all ICE cars on the road with EVs, the manufacturing, materials and the mining necessarily to extract all the materials necessary for that to happen, would cause such an increase in emissions that would be catastrophicall to the planet.
So the solution is actually less cars for earth, not more cars except Teslas instead of ICEs. It was an interesting analysys that I need to find.
Self driving cars in the form of fleets of autonomous robo-taxis that you hail on demand, would solve that "too many cars on earth" problem since most cars stay idly parked all day anyway, but we're very far away from actually achieve that level.