The article highlights the growing interest and investment in hydrogen as a promising alternative fuel for transportation. Major manufacturers like Toyota, Volvo, and Kawasaki are actively developing hydrogen-fueled internal combustion engines for both automobiles and heavy-duty sectors. The U.S. government, particularly the Department of Energy, is supporting this technology with funding for research and development projects focused on hydrogen combustion engines. Hydrogen's appeal lies in its potential to eliminate carbon emissions, especially when produced from renewable electricity through electrolysis. While acknowledging the need to consider the source of electricity used in hydrogen production, the article emphasizes that electrolysis with renewable energy results in almost entirely green hydrogen. Despite the current lag in hydrogen fuel infrastructure compared to electric vehicle charging stations, there is optimism about the rapid scalability of hydrogen fill stations, similar to the ongoing developments in California. The article concludes by advocating for a diversified approach to decarbonizing transportation, highlighting the importance of exploring all available technologies, including hydrogen, in the fight against the climate crisis.