So the people in this video make their own rocket engine out of household items like sugar and PVC pipe. Then they strap this rocket engine to a weird looking skate board (I've never seen a skateboard with wheels hanging out in the front and back like that). The kid gets on the skate board, pulls the ignition string and off he goes. The rocket make a whole bunch of smoke and he is soon obscured by the smoke. I can't say that the speed is all that great on it either. The aftermath picture shows where near the end of the rocket it burned through the PVC pipe.

Check out this home made rocket powered skate board for yourself.