So what?

Are you fantasizing that they'll reduce the price of cars because of this and somehow benefit people?

And they'd have to take the time to redesign. And Democrats will (hopefully) reinstate it in a few years, and carmakers probably recognize that. Along with the threat of legal challenges by environmental groups.

And, further, if we eventually do get these inefficient polluting cars - who's going to want to buy them? They certainly wouldn't be able to sell them in same countries. Seems pointless overall for carmakers, generally.

Just a gift to polluting corporations and billionaires who want profit at our expense.