Elon Musk wants to change the world, but some people think he's full of hot air. The billionaire has earned support by dedicating his wealth and energy to fixing climate change and preventing human extinction. His critics doubt Musk be able to deliver on his huge promises given his history. Musk's supporters say everyone doubted Tesla and SpaceX at the start—now they've upended their respective industries. What do you think? 🚗 🔌 🚀
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