In this Sept. 29, 2017, file photo, SpaceX CEO Elon Musk speaks at the International Astronautical Congress on in Adelaide, Australia. Musk began to sell flamethrowers in late January, and the product sold out in four days.

Elon Musk has a hot new product on his hands. The Los Angeles entrepreneur, who also leads Tesla and SpaceX, has been advertising flamethrowers sold by his tunnel-boring business Boring Co., and they’ve…

Photo Credit: Mark Brake/Getty Images, File
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