A New Kind of Internal Combustion Engine...

Reader Dr. Simi L. passes along this video of an OPOC (Opposed Piston, Opposed Cylinder) internal combustion engine.  The video makes clear the advantages of such a design, and they are indeed interesting.  I'd love to see one of these in action!  A word of caution to the viewer: the person narrating the video is the entrepreneur behind its development – so you can fully expect the benefits to be exaggerated and the challenges understated...