I bought the beginnings of this bike on eBay. A company called Wavecrest got out of the electric bicycle business and apparently sold their remaining frames to the guy I bought it from. The frame was made by the Montague folding bike people and is their "Paratrooper" model. I added some inexpensive wheels from Nashbar, a cassette and some street tires from Jenson, and some expensive folding pedals from I forget where.

Here it is in the folded configuration. Fits nicely in the car's trunk.