Cities globally are increasingly focusing on transitioning to zero-emission public transportation as a key strategy to combat urban pollution and mitigate climate change. The shift towards urban electromobility is gaining traction in major cities across the Americas, Europe, and Asia. Initiatives like the C40 network are driving over 70 cities to phase out combustion engine buses and adopt electric or hydrogen-powered units by 2030. This transition not only aims to reduce greenhouse gas emissions but also improve air quality and promote healthier urban environments. Key cities like London, Paris, Bogotá, and Santiago de Chile are already leading the way with electric bus fleets. The commitment to zero-emission public transportation is part of a broader strategy to build sustainable, healthy, and climate-resilient cities. Challenges such as financing and infrastructure exist, but the global momentum towards sustainable mobility is deemed unstoppable as governments and citizens recognize its importance in addressing the climate crisis.