Event Date
ITS Davis held a workshop on November 18, 2025, with the goal of better informing policy making through improved knowledge, increased stakeholder coordination, and development of innovative policy frameworks. The objective of the workshop was to assess the most promising strategies to accelerate the decarbonization of the U.S. on-road passenger vehicle stock, focusing on post-sale vehicles. The scope of strategies that were discussed includes accelerated scrappage, retrofitting vehicles to ZEV powertrains, and fueling ICEVs with low-GHG “drop in” liquid fuels. These strategies can be implemented alongside efforts to rapidly increase ZEV sales under existing policy, technological, and economic conditions. We note that there are many other strategies for decarbonizing transportation (e.g. travel demand reduction, vehicle fuel efficiency, road use pricing strategies, etc.); these have been well-covered in scientific literature to date and are outside the scope of this project. However, the workshop was an opportunity for participants to raise other novel strategies to decarbonize the post-sale passenger vehicle fleet.