King County Metro in Seattle, United States, is embarking on a pilot project to explore the integration of up to four hydrogen fuel cell buses into its growing fleet, potentially by early 2026. The initiative aligns with the company's dedication to achieving a zero-emission future. If the pilot proves successful, these buses will complement Metro's existing electric and trolley bus collection. General Manager Michelle Allison expressed the company's commitment to maintaining high-quality service while transitioning towards sustainable practices. Notably, King County Metro has a history of pioneering environmentally friendly transit solutions, having introduced diesel-hybrid vehicles in 2004 and later incorporating forty battery-electric buses into service. As part of its ongoing research and innovation, Metro has been recognized for its efforts in combating climate change and promoting equity within the transportation sector, earning accolades from the FAA as a leader in addressing environmental challenges.