a zero-emission vehicle is defined as battery electric, fuel-cell, or plug-in hybrid electric

Yes, they're still counting gasoline-powered hybrids as zero-emissions. Avoiding opportunities for that kind of stupidity is one reason why it'd be better to simply have a carbon tax that applies to everything. If CATL comes through with its low-cost sodium-ion batteries next year, then a relatively modest tax — such as the one we recently had — might even be enough to let EVs take over most of the market. Of course they might be slowed down a little by the cult-like devotion to putting GAS in your TRUCK as some kind of ritual expression of Conservative identity.