WTF! This is one some elliptical bike steez. Saw the Rockboard on TOLA's flickr from 2010 Interbike and immediately I was shaking my head (SMH) and laughing out loud (LOLing) in disgust. How gimmicky do inventors, if you can call them that, have to make these scooters. Just go out and ride a damn bike. I'm a million percent sure you'll get to places faster and get a better workout. Unless you like looking like a fool. Then you do you.