Hmm... a planetary gearbox, inside a wheel. Now thats a concept!
*Edit*
Well, I was looking around teh interwebs and found these suckers;
http://en.wikipedia.org/wiki/Switched_reluctance_motor ,
http://www.telegraph.co.uk/technolog...ew-vacuum.html Supposedly, they are much faster than any other motor out there.

off season project?