Stralis Aircraft, led by co-founders Stuart Johnstone and Bob Criner, is pioneering the use of hydrogen as a replacement for jet fuel in regional airliners such as the Dash 8. The company's initial testing will involve adapting the technology to Bonanza A36 aircraft named Bonnie and Clyde. While acknowledging the challenges of hydrogen power, including its explosiveness and infrastructure needs, Johnstone remains optimistic about the potential of hydrogen to decarbonize air travel. The system integrates fuel cells, tanks, and an electric motor, with liquefied hydrogen stored at extremely low temperatures to maintain stability. Stralis plans to use low-temperature proton exchange membrane (PEM) fuel cells for early tests, with the goal of achieving the first flight by the fourth quarter of 2025. By developing high-temperature PEM fuel cells, Stralis aims to maximize efficiency and range for its hydrogen-electric engines, projecting a range of over 500 kilometers with a 45-minute reserve. In terms of weight and cost efficiency, Stralis anticipates competitive advantages over traditional piston and turbine engines, potentially leading to significant cost savings and emissions reductions for short-haul flights. With a strong commitment to sustainability and decarbonization, Stralis believes that hydrogen technology holds the key to addressing the environmental impact of aviation and making substantial contributions to global emissions reduction efforts.