Troy Hartman was building a jetpack that he planned to use to fly out of an airplane at 8000 feet. But before leaping from a plane into thin air, he had a great idea: Why not test it out on skis first? Hartman tells PM how his jetpack ski test worked, how fast he went, and just how close the 1500-degree flames came to toasting his rear end.
[Via PopMech]
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