I live in SF, California. I think the cleaner gasoline laws are a good thing. Driving a car that emits a high volume of cancer-causing chemicals is obviously bad for everyone. For example, benzene, a cancer-causing chemical, is reduced by ~50% in CA gasoline vs Federal regulations. That's a good thing.

But that doesn't make the tire efficiency rules, as stated, a good idea, as I pointed out above. Less grippy tires -> more car crashes and more human deaths.