This $140,000 prototype on eBay “can be used with new or the millions of used sit down jet skis — loading/unloading is made easy since it rides in the boat while carried on the trailer.” Auction page.

At the moment the prototype will go approximately 52 mph. in 1 1/2 foot of water using a 130Hp Jet-ski. Only patent, prototype and trailer for sale, Jetski not included.

[via eBay]