1 Feb 2017 Jahr - The company has begun digging a 30-foot-wide (9 m), 50-foot-long (15 m), and 15-foot-deep (4.6 m) testing trench

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In an interview during a TED conference in April 2017, Musk estimated that this company's project had taken 2–3% of his time, making this venture a personal hobby.

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