zero mechanical details, nothing verifiable is zero information, plus there is a long venerable tradition of lying like hell whenever you talk about competitive advantages :) efficiency goes with materials, as a higher temperature and shock loading, will permit higher compression ratios, and that is as far as I know the only way to exract energy from a piston engine well unless the piston part is just viewed as a gas generator, but whoa betsy, the rabbit hole is looming before us, and having listened to folks involved in engine development (including F1), I am just a spectator,engines are hard, and these days anyone who could do ICE, is looking at other stuff, or retirement ceramics have come close, but dont have the reiability when produced at the scale needed for mass market