I was surfing the web and found this awesome build by some guys at MIT. They made this scooter during a summer engineering workshop.

http://web.mit.edu/first/scooter/

They design and made there own 590W hub motor. Not only one motor but 2 motors! 2 wheels drive scooter!

Me and my friend Jérôme ( yes, one of my good friend is also name Jérôme and we always work together so it is Jérôme² ) are thinking/planning of making our own hub motor for a scooter.  On the BWD scooter website, there is some pretty good info and mathz equations to make your own. Worth looking into.

This is pretty darn sick! Those motors are really powerfull.