This book is the second volume of the proceedings of the 2025 World Mobility Conference (WMC), held on June 3-5, 2025, in Barcelona, Spain. This volume focuses on papers exploring Mobility advancement from Digitalisation & AI, effects on Energy Infrastructure and Sustainability for the Future Mobility Systems and Solutions. The World Mobility Conference covered a range of forward-thinking topics crucial for the future of mobility. These include Future Mobility Systems & Solutions, Propulsion Systems, Energy Infrastructure, Safety & Automated Driving, Brakes, Tyres and Chassis, Digitalization & Artificial Intelligence, and Sustainability. These topics are pivotal not only for advancing the mobility industry but also for addressing broader challenges such as environmental impact and the global push for carbon-neutral solutions. The conference served as a platform for industry leaders to present innovative ideas, share insights, and collaborate on developing new technologies and strategies that will shape the future of transportation. Publishing the WMC proceedings is important, as it ensures the dissemination of these innovative ideas and discussions to a wider audience, fostering knowledge exchange and stimulating further research and development in the field. It also provides a reference point for future work and helps establish benchmarks for progress across the various topics discussed. The proceedings stand as a testament to the collective efforts and advancements made by the mobility community in shaping a more sustainable and efficient future for transportation.