Cummins Inc., in collaboration with the Hydrogen Engine Alliance and other industry partners, presented the case for hydrogen internal combustion engines (H2-ICE) at the IAA event. The discussion revolved around the role of H2-ICE in driving strong, clean energy economies and its potential in decarbonising global markets. The event underscored the need for infrastructure development to support the widespread adoption of hydrogen as a fuel, with an emphasis on legislative consistency to promote the categorisation of H2-ICE as a zero-emissions solution. Jane Beaman of Cummins highlighted H2-ICE as a crucial transitional technology due to its similarity to traditional engines, use of zero-carbon hydrogen fuel, and minimal emissions. Industry experts stressed the importance of a diverse range of power technologies, including fuel cells and battery electric solutions, alongside hydrogen combustion engines, to achieve emissions reduction targets. The event also emphasized the complementary nature of H2-ICE and hydrogen fuel cells, with the growth in H2-ICE driving increased hydrogen fuel production and lowering costs. Collaboration and advocacy for hydrogen technologies were seen as critical for the future growth of this sector, with a focus on developing a portfolio of technologies to accelerate cleaner power solutions. The event concluded with a call for a global policy platform conducive to the growth of hydrogen as a fuel, highlighting the collective potential of hydrogen combustion engines in driving a greener future.