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概述了车辆轻量化的必要性、日本试制轻量化车辆的发展近况，特别是采用新材料试制轻量化车辆的现状及今后的发展趋势。
The necessity of vehicle lightweighting, the development of lightweight vehicles for trial production in Japan, and the status quo and development trend of light-weight vehicles using new materials are outlined.