Hydrogen fuel cell buses are proving that clean, reliable public transport is possible at scale. With the support of the Clean Hydrogen Partnership, the JIVE and JIVE 2 projects have taken this technology beyond early adopters, bringing demonstrations to 15 countries and around 50 cities across Europe. By combining roadshows with stakeholder workshops, the projects have raised awareness, built policy support, and sparked follow-up investments – accelerating the roll-out of zero-emission bus fleets.