In a groundbreaking development for clean transportation, San Bernardino County in the United States has welcomed North America's first hybrid hydrogen - battery train. The Zero Emission Multiple Unit (ZEMU) passenger train, utilizing a combination of hydrogen and battery technology, has arrived in the county for final testing before starting its service between San Bernardino and Redlands later this year. This innovative train emits only water vapor, making it a zero-emission mode of transit, which is a significant step towards sustainability in a region facing air quality challenges. The San Bernardino County Transportation Authority's strategic planning and commitment to innovative transportation solutions have culminated in the arrival of the ZEMU, showcasing the agency's dedication to a greener rail system. The train's journey, starting in Switzerland and passing through various testing phases in the U.S., reflects years of planning and development to bring this cutting-edge technology to the region. With a distinctive blue and white design, the ZEMU is set to undergo further testing on the Arrow Line and Metrolink system, heralding a new era of clean passenger rail service in the region. The ZEMU's arrival and upcoming service launch signify a monumental achievement in the quest for sustainable and environmentally friendly transportation options in San Bernardino County.