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Toyota builds experimental hydrogen-powered pizza oven and grill.
(www.autoblog.com)
This is a most excellent place for technology news and articles.
Their days aren't numbered until governments actually say so. In the meantime, non-GHG emitting sources supply less than half of the world's electricity as is, nevermind the hypothetical demand of a predominantly electrified vehicle fleet.
Governments and markets are saying so.