I thought I would start a thread where we can list some of the new more efficient engines. List anything you know, proven or just rumours. Here are two I know of. Myt(massive yet tiny) engine: http://www.angellabsllc.com/ Revetec Engine: http://www.revetec.com/ What do you think of these engines? How real do you think they are? I am particularly interested in their possible application in a normal cars especially sports cars. The following is a video from planet tv. They talk about both of these engines. You have to watch a few minutes into it I believe in order to get to the part where he talks about engines. What other revolutionary engine designs do you know of? There is plenty of more info that you can find with a search engine and there are more youtube videos on these engines talking about them.