Hyundai, through its subsidiary Rotem, has introduced the next-generation K3 battle tank powered by hydrogen fuel cell technology. This innovative tank aims to provide clean and almost silent propulsion by combining hydrogen with oxygen to create electricity stored in a battery. The K3 is set to be the first tank utilizing this technology, offering tactical advantages such as reduced emissions, noise, and heat signature. While the initial models will feature hybrid powertrains, blending hydrogen and conventional diesel, the long-term plan is to phase out diesel entirely. The development of the K3 tank, in collaboration with the South Korean military, is expected to begin production in 2040. In addition to the advanced powertrain, the K3 showcases impressive features like stealth capabilities, autonomous driving technology, and a state-of-the-art 130mm main gun. Moreover, the tank will prioritize crew safety with a heavily armored section for the driver, commander, and gunner. Despite some skepticism regarding hydrogen efficiency compared to battery-electric vehicles, Hyundai Rotem continues to innovate in various sectors, including hydrogen-powered trams. Furthermore, the potential for hydrogen as a fuel in larger civilian vehicles is being explored by several manufacturers, highlighting its versatility and potential for future applications beyond military use.