In a recent webinar by the Engine Technology Forum, industry experts discussed the promising future of hydrogen internal combustion engines (H2-ICE) in the trucking sector. These engines, which resemble and operate like diesel engines, offer quick refueling times, lower emissions, and a familiar user experience. Cummins, a key player in this transition, is aiming to scale production of hydrogen engines by 2028, alongside their work on battery electric and fuel cell electric vehicles. Each powertrain technology serves different applications, with H2-ICE being particularly suitable for high-power demands in off-road vehicles and long-haul trucking. The advantages of H2-ICE technology lie in its carbon-zero nature, ease of service, compliance with emissions regulations, and familiarity to end users accustomed to diesel engines. With aftertreatment systems similar to those in diesel trucks but with significantly lower emissions, hydrogen engines are positioned as a cleaner alternative for the future of commercial transportation. However, a significant challenge in the widespread adoption of H2-ICE technology is the lack of fueling infrastructure. The industry is responding with investments exceeding $300 billion in low-emission hydrogen production, including various methods like green, yellow, blue, and pink hydrogen production. While challenges remain, such as weight considerations and government support for infrastructure development, industry experts remain optimistic about the potential of hydrogen internal combustion engines to transform the trucking industry towards a more sustainable future.