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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.
But they can still sell hydrogen, they can't really sell solar panels. Even encouraging people to keep burning things (like hydrogen) benefits gas since it slows down electric alternatives to gas heating.
They don't have to sell hydrogen or solar panels. They'll just keep selling fuel to power plants.