Personally, outside of some niche applications, I don't think fuel cells are going to replace EVs. The losses in efficiency are just to great in the conversion from water to hydrogen/oxygen gasses to electricity - unless someone figures out how to harness the energy released in a hydrogen bomb. But I wouldn't hold my breath for that. I do think that Tesla isn't as long for this world as Musk would have hoped for though. I personally hope he ends up broke and mocked as soon as possible. The world will be just a tiny bit better place IMO.