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Various candidates for nonpetroleum electric and hybrid vehicle (EHV) subsystems have been evaluated as part of the Advanced Vehicle (AV) Assessment at the Jet Propulsion Laboratory. The subsystems include battery and power-peaking energy storage, heat engine and fuel cell energy conversion devices, motor/controller subsystems, transmissions, and vehicle subsystem (structure and body) technologies. The primary objective of this effort, was to project the mature capabilities of the various components in the 1990’s for application in the systems evaluations in the next phase of this activity. This paper presents the basic characteristics of the subsystems and compares their capabilities with projected AV subsystem requirements.