Shelby: Invented by French competitive jet skiing champion Franky Zapata, it is an addition to the Jet Ski called the Flyboard.
The Flyboard propels its user using water from your Jet Ski into the air and under water. The user controls the movement with nozzles located on their feet and hands, hitting speeds of more than 18 miles per hour.
And how much will this attachment cost you? Only fifty-eight hundred euros, which is about seventy-five hundred dollars.