Hyundai's defense subsidiary, Rotem, has made headlines by introducing the world's first hydrogen-powered stealth battle tank. This innovative tank utilizes hydrogen fuel cells to enhance sustainability and reduce noise during operations, granting it a stealth advantage on the battlefield. Developed in collaboration with South Korea's Agency for Defense Development, the tank, known as the K3, is set to be the next iteration of the Republic of Korea's K-series of battle tanks. Hyundai Rotem envisions the K3 to surpass the capabilities of current main battle tanks, offering superior preemptive strike capabilities through an artificial intelligence-based fire control system. The K3 tank boasts various cutting-edge features, including an unmanned turret with a 130mm cannon that can target objects up to three miles away. It incorporates advanced defensive technologies like a Directional Infrared Countermeasures system for heat-seeking missile interception and a drone jamming device. The use of hydrogen fuel cells not only reduces noise and heat emissions, making it harder to detect in combat situations, but also enhances fuel economy, acceleration, and mobility. Furthermore, the tank's design includes a unique blend of modular steel, ceramic, and composite armor, ensuring both durability and stealth capabilities. With fewer moving parts than traditional tanks, the K3 is designed to be easier to maintain and operate reliably in challenging terrains. Hyundai Rotem plans to commence production of the K3 post-2040, aiming to revolutionize the field of battle tanks with its innovative technologies and sustainable power source.