gration into models that project the fuel economy capability of vehicles, fleets and manufacturers, including fleets specified at the level of individual vehicle models, engines, and transmissions. The report should also provide and document estimates of all input data required for implementation of these methodologies.

  1. Assess how ongoing changes to manufacturers’ refresh and redesign cycles for vehicle models affect the incorporation of new fuel-economy technologies.

The committee’s analysis and methodologies will be documented in two NRC-approved reports. An interim report will discuss the technologies to be analyzed, the classes of vehicles which may employ them, the estimated improvement in fuel economy that may result, and the models that will be used for analysis. The final report will include the detailed specifications for the methodologies used and the results of the modeling, and will make use of the input from the interim report and any new information that is available.

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