Last weekend, pedestrians were shocked to hear the likes of Elon Musk and Mark Zuckerberg playing through the speakers of crosswalk signals crossing the streets of Palo Alto, Menlo Park, and Redwood City.

The slip means Tesla no longer accounts for a majority of the EV market share in the state, according to the California New Car Dealers Association.

Tesla's electric-vehicle registrations in California dropped 15.1% during the first quarter, industry data showed, signaling an accelerated decline and growing challenges for the Elon Musk-led automaker in its biggest U.