A video from Zapata Racing — the company that makes the water- and jet ski powered Flyboards, shows founder Franky Zapata zooming back and forth over a small lake strapped to some sort of aircraft engine, Green Goblin-style. Yes, Zapata has apparently created a hoverboard with enough power to work on water.

For those who think the Flyboard Air is a fake….. A normal training day @ ZR ….󾌩󾌳󾟭Stay tuned this week end we break a record 󾭞🏻󾭞🏻

Posted by ZAPATA RACING on Monday, April 11, 2016

Zapata Racing also makes some outrageous claims about the Flyboard Air’s capabilities, saying that the “Independent Propulsion Unit” can fly autonomously for 10 minutes with a ceiling of 10,000 feet, and it has a top speed of 93 miles per hour (150 kilometers per hour). There are no details on how Zapata is controlling the craft, exactly what’s powering it, or what would happen if the engine were to fail.