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This research paper analyzes the alignment of 2018 U.S. light vehicle investments with the carbon intensity requirements of the Paris Agreement. It finds that the vast majority of financial flows, driven by private sector purchases of internal combustion engine vehicles, are critically misaligned with temperature trajectories, while government spending shows better alignment. The paper emphasizes the impact of 'locked-in' emissions from existing fleets and the necessity of scaling electric vehicles and modal shifts to meet climate goals.