It’s 2 full years before the target of 1.5 million in 2025. That is the message: people are buying EVs in California faster than predicted. Of course it is just a drop in an ocean of suvs, trucks and crossovers that do 20 mpg or less, but you’ve got to start somewhere.
For year 2018 there were 15.1 million vehicles registered in Calif. Number of registered automobiles in California 2018 | Statista (There could be unregistered, such as farming trucks.) For year 2021 there is a cite of 31.4 million vehicles. U.S.: total number of automobiles by state | Statista Population, including children, 39.2 million. California population by year, county, race, & more | USAFacts FWIW