I stumbled across this alternative engine program and was impressed by the level of support it has been gaining. The design is based on opposing cylinders which has been attempted before. However, CFD analysis and a methodical engineering approach seems to have allowed the design to get past previous drawbacks which led others to abandon or ignore it. A joint venture with Cummins is now building a demonstrator for the US Army and commercial end users are funding continued research. If it works, they will achieve a “step change” in fuel economy while meeting future emissions standards all while being compatible with current size/weight envelopes and production tooling.