Cummins Inc., a U.S.-based diesel engine maker, foresees India as a frontrunner in adopting hydrogen internal combustion engines (ICE) for long-haul trucks. Tata Cummins, a joint venture, has initiated production of a 6.7-litre hydrogen ICE engine in India, catering to heavy-duty trucks. The challenges in electrifying diesel trucks, such as reduced payload capacity with larger batteries, make hydrogen a promising alternative. The article highlights the two hydrogen-based technologies being explored: fuel-cell and Hydrogen ICE (H2ICE). Pilot trials of Tata's hydrogen ICE trucks, powered by Cummins engines, are already underway. However, achieving scalability requires partnerships with the government and OEMs to develop the necessary infrastructure like fuelling stations. In Jamshedpur, a new facility was established by TCPL GES, a Tata Cummins subsidiary, to manufacture hydrogen-based internal combustion engines for commercial vehicles. Both Tata and Cummins are aligned in this product strategy to produce zero to low-carbon products. Despite the initial high cost of hydrogen fuel, government support and scaling up manufacturing can drive costs down. Cummins aims to be a zero carbon company by 2050 and has introduced the HELM platform, emphasizing higher efficiency, lower emissions, and accommodating multiple fuels. While Cummins currently produces battery cells in the U.S., there are no immediate plans for cell manufacturing in India, aligning investments with global demand. The Indian market is deemed crucial for Cummins due to the growth opportunities presented by infrastructure development.