The San Bernardino County Transportation Authority has unveiled a new Zero Emission Multiple Unit (ZEMU) hydrogen-powered passenger train to revolutionize rail travel in southern California. The train, a result of over a decade of planning and development, utilizes a hybrid hydrogen and battery technology, emitting only water vapor as the byproduct of its propulsion system. This marks a significant step towards establishing a cleaner and more sustainable public transportation ecosystem in the region. The ZEMU, the first of its kind in North America to comply with Federal Railroad Administration standards, was built in Switzerland by Stadler and journeyed to the U.S. through meticulous testing and demonstration phases. Its arrival in San Bernardino signals the commencement of final testing on local rail systems, paving the way for its official service introduction on the Arrow line. With a distinctive blue and white water-vapor design, ZEMU showcases an innovative approach to hydrogen-powered rail technology, aiming to set a new standard for environmentally friendly transportation solutions. The train's arrival has been met with enthusiasm from SBCTA President Ray Marquez, who views it as a crucial milestone in the county's efforts towards a greener rail system. As ZEMU embarks on its final phase of testing and system checks, the future of cleaner, more efficient rail travel in southern California looks promising.