This research will evaluate revenue-neutral mechanisms to encourage zero emission vehicle (ZEV) sales in California, with no net cost to taxpayers: The analysis is being done for both private (household) light-duty vehicles and for commercial trucks, with their two very different markets. It will also be among the first to consider equity aspects of different feebate structures. The research team is also reviewing various feebate designs globally, their effectiveness and potential applications to cars and trucks, and lessons for California to roll out an effective transportation transition, focusing on BEVs, PHEVs, and FCEVs (together comprising ZEVs).