Someone had to.

[Heffernan]

is he... is he... using them on water? geez havent we learned that this is a bad idea unless you got power on them?

[ToorimaKun]

Please note, this board cannot be used outside the skatepark, the water in the vid is very very shallow and the fuel last a very very short time.

oh, so ether their is magnets in the concrete or under it or they are using some thing like Teslas hover tech.