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Elon Musk’s Hyperloop prototype tunnel removed in Hawthorne

Six years ago, SpaceX installed an above-ground tube in front of its Hawthorne headquarters, drawing excitement and intrigue from around the city about Chief Executive Elon Musk’s latest experiment. At annual competitions, engineers and students from across the globe sought to develop and test Musk’s proposed Hyperloop transportation technology, which promised to hurl passengers through …