The global automotive industry is witnessing a significant shift towards zero-emission technology, with Japan and South Korea at the forefront of the hydrogen revolution. Both countries are vying for dominance in hydrogen-powered vehicles not just as a market competition but as a strategic move towards achieving energy independence and promoting environmental sustainability. Japan, spearheaded by Toyota, has been an early adopter of hydrogen technology, with notable investments in fuel cell technology for passenger and commercial vehicles. Toyota's innovative approaches include exploring hydrogen combustion engines and introducing compact, portable hydrogen tank systems for efficient refuelling, showcasing the potential for compact hydrogen vehicles. Other Japanese automakers like Honda are also reinvigorating their hydrogen strategies through partnerships and cutting-edge fuel cell system developments. South Korea, led by Hyundai, is ramping up its hydrogen ambitions to compete on a global scale. Hyundai's initiatives include unveiling advanced hydrogen fuel cell concept vehicles with impressive performance metrics and investing in fuel cell production facilities to supply systems globally. The South Korean government is actively supporting these efforts by aiming to expand the domestic hydrogen ecosystem and promoting hydrogen applications in various sectors. Despite the promise of hydrogen technology offering benefits like extended range and quick refuelling, challenges such as production costs and infrastructure limitations persist. However, the concerted efforts of Japan and South Korea through significant investments, innovative approaches, and government backing are paving the way for a future where hydrogen-powered vehicles play a crucial role in creating sustainable transportation solutions for long-haul and heavy-duty applications.