The Toyota hydrogen-engine Corolla has reached a significant milestone as it completes its fifth consecutive year competing in the Fuji 24 Hours endurance race. The article features an interview with automotive analyst Shinya Yamamoto, who has been closely following the journey of Toyota's hydrogen-powered vehicle since its inception. Yamamoto reflects on the progress made over the years, emphasizing the initial impact of the engine as a 'catalyst for dreams' and the subsequent shifts towards carbon neutrality through advancements in power output and range. Each year has presented unique challenges and milestones, from transitioning to liquid hydrogen to addressing durability issues in crucial components like the pump. Despite facing setbacks, the team's dedication to pushing the boundaries of hydrogen technology is evident in their continuous pursuit of improvement. The 2025 race is described as a pivotal moment in the development process, signaling a focus on further enhancements in key areas such as the pump and tank to elevate the vehicle's overall performance. Yamamoto suggests that the current phase marks the culmination of the initial development stage, paving the way for potential advancements in future iterations of the hydrogen-powered Corolla. As the team prepares for the Nürburgring challenge, the article underscores the resilience and determination required to overcome obstacles and drive innovation in hydrogen engine technology. Despite the ups and downs faced along the way, the overall sentiment towards the future of hydrogen-powered vehicles in motorsports remains positive, highlighting the ongoing evolution and potential of this sustainable energy solution.