Last week, French inventor Franky Zapata previewed mobility technology that he claimed would propel him across the English Channel (from France to England) in only 20 minutes. His first formal attempt occurred earlier today. Though Zapata didn’t quite make it all of the way—waves in the channel displaced his refueling station (situated 11 miles from the English city of Dover) by centimeters and he ultimately miscalculated the landing—his attempt shouldn’t be deemed a failure. The “Flyboard,” as he’s named it, is a promising innovation for the mobility industry. Propelled by five small jets, Zapata’s sled-like device can hit a top speed of 87mph and steadily cruise at altitudes from 50 to 65 feet. Find out more at the New York Times.