The United States has launched its first zero-emission passenger train, the ZEMU, in San Bernardino, California, marking a significant milestone in decarbonizing public transport. With 108 passengers, the ZEMU serves as a real-world test for hydrogen technology in everyday public transport, showcasing its potential. While the US is starting its journey, countries like Germany, the UK, and France have already made progress in adopting hydrogen trains, highlighting the global recognition of hydrogen's role in revolutionizing rail transport. The debate between hydrogen and electric trains revolves around factors like emissions, infrastructure, and energy generation sources. Hydrogen's benefits lie in its energy density, lower infrastructure costs, and potential for a net-zero future. However, challenges such as infrastructure development, safety measures, and green hydrogen production advancements need to be addressed for hydrogen trains to succeed. The future of rail travel may see a mix of hydrogen and electric trains, depending on route requirements and local factors, leading towards a fully decarbonized rail network. The World Economic Forum's focus on Advanced Energy Solutions aims to accelerate the deployment of clean fuels, hydrogen, and other technologies to drive the energy transition.