Astron Aerospace has introduced the H2Starfire, a revolutionary hydrogen-powered rotary engine that boasts exceptional thermal efficiency and zero NOx emissions. This innovative engine design features two counter-rotating shafts with tight tolerances achieved through ceramic coatings and titanium components. By utilizing hydrogen as fuel, Astron aims to offer a cleaner alternative to traditional internal combustion engines and electric vehicles. The H2Starfire operates at efficiencies exceeding 60%, far surpassing typical car engines which run at around 20% thermal efficiency. The engine's unique construction eliminates the need for water cooling, enhancing performance and reducing complexity. Despite the need for more substantial evidence to support its claims, Astron is confident in the engine's ability to emit no NOx emissions while delivering a powerful driving experience. The compact size and impressive power output of the H2Starfire, producing 400 hp and 500 lb-ft of torque from a design comprising only 82 parts, showcase the potential for hydrogen combustion engines in the future of clean transportation. While Astron Aerospace continues to work on bringing this innovative engine to market, the industry eagerly anticipates further developments in the realm of high-efficiency, environmentally friendly combustion engines.