i dont really care if this motor ever really gets implemented. i just think its an awesome design. if you watch the video on the site, they claim to be able to create wicked amounts of compression. Hot compressed air just sounds like predetonation. plus i didnt really understand how the fuel injection works. if its in the compression or in the combustion cylinder, and if injectors squirt fuel into the compression cylinder, how efficiently does that fuel reach the combustion chamber? lots to think about