Benjamin Nelson built his own electric motorcycle from parts he got on Craigslist and from a local farm store. It only has a 15 mile range, but it gets the equivalent of 300MPG (based on current prices of gas and electricity).
"Then I mounted the motor to the frame using the existing engine mounting holes and a piece of scrap aluminum plate. I found a sprocket and chain in the tractor repair isle of the farm store."
And Mr. Nelson even admits that he doesn't own any power tools other than a drill, doesn't know how to weld and only took one metal shop class in high school.
DIY Electric Kawasaki Motorcycle [Treehugger] (Thanks, Chris T.!)