erfnet writes "A cool new high-efficiency gasoline engine prototype has no radiator, no pistons, no valves, no transmission, and no fluids (except for the fuel). At first glance it has a few similarities with the Wankel engine, but is more advanced. The engine is only suited for hybrid-electric vehicles, but that's okay. The efficiency they are claiming: is over 3x what today's gasoline engines produce. The developers, a team at Michigan State University, hope to have this engine on the market in the next two/three years."