Hop to about 1:49 in this video and see if an idea does come to mind:

https://www.youtube.com/watch?v=bM1Kf4EltaU

Is that something we could build?

These guys claim an order of magnitude efficiency increase which coupled with a generator should be able to self-loop.

Dig into their site and see what you think:
http://www.seanicviewinc.com/

I know they would never license their technology to the hobbyist experimenter, but maybe we can reverse engineer it if we get enough clues.  Pulse Motor Build-off 2014 anyone?

Here's a link to the conversion method for torque to horsepower:
http://www.howstuffworks.com/question622.htm

Looks like you can go the other direction pretty easily too.

For torque unit conversions, here's an online tool:
http://www.onlineconversion.com/torque.htm

Take a few typical motors around the house and work the numbers.  They will be nowhere near what Ken is getting with his motor.  Pretty amazing if you ask me.  Six Watts of power to get 41 pound-feet of torque.  Wow!