The article highlights the growing prominence of hydrogen-powered engines, especially Cummins Inc.'s 15-liter hydrogen internal combustion engine, in revolutionizing the transportation industry towards a cleaner and more sustainable future. Hydrogen fuel engines are hailed as a potential substitute for fossil fuels due to their ability to be generated with minimal carbon emissions, unlike traditional gasoline and diesel engines that produce greenhouse gases. Cummins' hydrogen engine design shows promise in significantly reducing emissions and spearheading the transition to sustainability globally. With good power and torque output, these engines are well-suited for heavy-duty applications, providing a feasible solution for industries seeking to cut emissions. The rising global focus on zero-emission technology has propelled the adoption of hydrogen engines, especially in sectors like freight transport, where electrification faces challenges. The affordability and practicality of Cummins' hydrogen engine make it an attractive option for reducing carbon emissions without requiring major infrastructure adjustments. Additionally, the potential to produce hydrogen fuel through renewable sources offers a carbon-free alternative, further enhancing the environmental benefits of hydrogen engines.