https://blog.ucs.org/dave-reichmuth/why-does-toyota-oppose-c...

it's sunk cost on their hydrogen cell R&D - they want there to still be room for that instead of going with electrification but they have to diversify their portfolio to keep up with markets

> "Toyota in particular has been vocal that they are uninterested in making ZEVs available in California. [...] Toyota has invested in hydrogen fuel cell electric vehicles [instead]."