The HydroShunter project in the UK has recently revealed a working prototype of a hybrid hydrogen fuel cell and battery-powered locomotive, aiming to showcase how hydrogen technology can extend the life of heritage locomotives. The project partners, including Severn Valley Railway, University of Birmingham, and Vanguard Sustainable Transport Solutions, equipped the train with an 80kW fuel cell and 230kWh battery system, providing up to 250kW of traction power and a top speed of 15mph. With an estimated running time of 20 hours and up to 60kg of storage, the new system fits into the former engine bay of the locomotive, demonstrating a potential way to futureproof heritage trains. Despite challenges faced by hydrogen rail projects in Europe, such as the recall of hydrogen trains in Germany and supply disruptions, the development of the HydroShunter locomotive signifies a positive step toward sustainable rail transport. The European rail industry's exploration of hydrogen technology reflects a broader effort to decarbonize and modernize railway networks amidst economic constraints and technological advancements.