Later in the article: "The inventor made headlines in the middle of July when he appeared over crowds during France’s Bastille Day celebrations carrying a gun, a demonstration of some of the uses that the device could have."
"After a failed attempt at the end of July, French inventor Franky Zapata successfully crossed the English Channel early this morning on his Flyboard Air, a jet-powered hoverboard.French inventor successfully crosses the English Channel on a hoverboard | The Verge
Zapata departed from Sangatte, France and arrived in Dover, England 22 minutes later, reaching speeds of up to 106 miles per hour during the 22-mile trip. “We made a machine three years ago,” he said after landing, “and now, we’ve crossed the Channel, it’s crazy.”
The Guardian reports that the trip wasn’t a continuous one: because he only carried a 10-minute supply of fuel on his back, he had to make a pit stop at the halfway mark to refuel."