An attendee operates a Boring Co. flamethrower at the company's photo booth during an unveiling event for the Boring Co. Hawthorne test tunnel in Hawthorne, California, U.S., on Tuesday, Dec. 18, 2018. On Tuesday night, Boring Co. will officially open the Hawthorne tunnel, a preview of Elon Musk's larger vision to ease L.A. traffic. Photographer: Robyn Beck/Pool