The whole idea of ability to drive on HOV lane with single occupant is to promote more green cars on the road, it would end eventually as more people realize global warming is real and jump on the clean air bandwagon, it is not meant as a EV perk forever, same as the tax credit. Just be happy that more people are going green and you still can drive on most HOV lanes with single occupant in CA other than a few extremely congested expressways.