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Our previous research found that promoting plug-in electric vehicle (PEV) adoption through financial subsidies is expensive. In this commentary, we explore how the cost-effectiveness of the PEV subsidy program has evolved over time. To understand this evolution, we developed vehicle choice model-based counterfactual simulations using annual United States (U.S.) new vehicle market share and vehicle characteristics data for each of the model years (MYs) from 2011 to 2017.
