I cant imagine what CA looks like. We live in South Carolina and we see Tesla's and other EVs. Ummm... Im not sure what one would consider frequently though. But let me put it this way. IF we are out and about driving it's not unusual to see an EV at some point during the day, if we see two during the time we are out that is more notable. But not uncommon even say to see one in a parking space someplace.That is true. We live in a Tesla rich state, California. My wife was in South Carolina for a week a few months ago and she said Teslas were virtually nonexistent.
Scott
I suspect in CA it's not uncommon to see multiple EVs when out driving around or in parking spaces.