it's homemade in the sense that I assembled it and modified a couple parts. The box on the back is a 14-gallon rubbermaid style storage box. The frame+wheels were given to me and I bought the motor and battery separately. The handlebars are cruiser style bars which I chopped off really narrow and installed "backwards". The seat was a hole-in-the-middle seat with thick foam on top, but in a moment of inspiration and frustration with the seat I was using before (having long since decided the foam-top seat was unusable) I removed the foam and cloth from this seat to use the bare plastic part. Much more comfy.
That is a strange bike... not in a bad way.