As part of the inaugural GLOBE Advance, The Delphi Group and Pollution Probe hosted the Partnerships to Achieve Deep GHG Reductions in Transportation discussion, sponsored by the Canadian Gas Association with support from the Global Automakers of Canada. The report summarizes the challenges and opportunities identified by experts during the Advance session. It also identifies a roadmap for collaborating across all fuels (natural gas, renewable natural gas, hydrogen, electricity, biofuels, etc.) to reduce GHGs in the transportation sector.