The M77/Glasgow Southern Orbital project in Scotland has made significant strides in the adoption of hydrogen technology in construction. Retrofitting vehicles with hydrogen hybrid technology has proven to be a fast, straightforward, and emission-reducing solution, demonstrating its effectiveness in reducing carbon emissions. The vehicles can operate in diesel-only mode when necessary, mitigating risks related to hydrogen availability. Retrofitting also serves as a gradual way to build demand for hydrogen, allowing the supporting infrastructure to expand alongside adoption. Safety measures, including antistatic clothing for operatives and comprehensive training, have been implemented to address the challenges of refuelling hydrogen vehicles. The article highlights the importance of hydrogen supply, emphasizing the need for enhanced supply capabilities in Scotland post-2026 to support widespread adoption. Mobile refuelling has been identified as crucial for the construction industry, with a preference for on-site refuelling to reduce downtime and ensure access in extreme weather conditions. Collaborative efforts with organizations like Aberdeen City Council and First Bus Aberdeen have provided valuable insights and best practices for successful hydrogen integration. Lessons learned include the evolving nature of hydrogen technology and the necessity of information sharing with caution due to the industry's infancy.