Toyota, Mazda, and Subaru have unveiled prototypes of internal combustion engines that can run on hydrogen, gasoline, and other fuels as part of their strategy to promote alternative technologies for reducing carbon emissions. These carmakers are focusing on developing smaller and more efficient engines that can be integrated into electric vehicle manufacturing platforms while meeting stringent emission regulations in the future. Toyota, the world's largest car manufacturer, is leveraging its success in hybrid car sales to highlight the significance of fuel-burning engines in the transition to electric vehicles amid the global push for decarbonization. The collaboration between Toyota, Mazda, and Subaru signifies a shift towards embracing hydrogen technology alongside the prevalent trend of battery EVs led by companies like BYD and Tesla. By emphasizing the importance of internal combustion engines that can utilize hydrogen, the Japanese manufacturers are demonstrating a commitment to innovation and environmental sustainability in the automotive industry. This move also reflects a strategic approach to diversifying propulsion technologies to address the pressing need for reducing carbon footprints in transportation. Moreover, the development of hydrogen-capable engines showcases the evolution of traditional car manufacturers to adapt to the changing landscape of the automotive sector. As the industry transitions towards electrification, this initiative by Toyota and its partners underscores the gradual shift towards more eco-friendly and energy-efficient mobility solutions. By combining the benefits of hydrogen technology with electric vehicle platforms, these carmakers are positioning themselves to meet the evolving demands of consumers and regulators for cleaner transportation options.