[quote T850GM8AD3BC4CEE]T.... My favourite (off topic) wacky engine was the Sarich Orbital, although part of me always felt it was a very elaborate scheme to attract investment rather than a serious endeavour. https://www.curbsideclassic.com/automoti...[/quote] Smackeyacky, my questionable claim to fame is that I have driven that exact two stroke Ford Fiesta pictured in the article you linked to. The Orbital engine itself was a dead end but the related development of the fuel injection system was successful. As intimated in the article, it is being used in spark-ignited diesel unmanned aerial vehicles(UAV) as the US military is rationalising its fuel types to be largely diesel.