The construction and public demonstration of these concept vehicles are the result of massive efforts by all of the car companies and is a major step forward for the PNGV program. USCAR solicited its members for expenditures on “PNGV-related” research and estimated the combined annual expenditure of the three companies for the last three years was about $980 million. As development on these vehicles proceeds, much valuable information will be obtained to guide the extensive performance improvements, cost reductions, and manufacturing development that will be necessary to move to the next stage of the PNGV program, production-ready prototypes by 2004.

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