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From daily commutes to cross-country road trips, millions of light-duty vehicles are on the road every day. The transportation sector is one of the United States’ largest sources of greenhouse gas emissions, and fuel is an important cost for drivers. This study is a technical evaluation of costs, benefits, and implementation issues of fuel efficiency technologies for next-generation light-duty vehicles. In addition to making findings and recommendations related to technology cost and capabilities, it considers the impacts of changes in consumer behavior and regulatory regimes appropriate for 2025-2035.
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