Roller skate with water slider

Before greeting the summer, a movie that rolls skates with a water slider that is not flowing yet. It seems fun for the second half anyway, this is good.
YouTube - ATL WaterPark Tour 2 (Black Market)
http://www.youtube.com/watch?v=hLJLI2jFcCE

Even if it gets flat, even if the skin turns, I will continue to slide. What on earth will they drive them so far ...?