Here's another video explaining its history and how it works: https://www.youtube.com/watch?v=Cgi5q0-omlY > The H2 Starfire engine is a **hydrogen-powered engine** technology developed 3 years ago by Astron Aerospace that is designed for a wide range of applications. > It is a lightweight, compact rotary engine with a claimed power output of **over 400 horsepower**, high efficiency (over 60%), and minimal moving parts, which result in low maintenance. > **The engine produces only water vapor as a byproduct** and is advertised as being more cost-effective than electric vehicle batteries or traditional fuel cells, according to the company. > Unfortunately it does not have a confirmed release date, but the company has been developing prototypes. Its release is still pending development and testing, as the technology is not yet available to the public.