In recent years, the automobiles have been mass-produced in the world-wide scale. The needs for automobiles has increased; namely not only the continual improvements of both fundamentla functions (such as driving, turning, stopping) and basic automotive functions: (such as safety, comfort, and reliability) but also taking global engvironmental issues into consideration. The environmental protection in automobile industries should be needed to conduct continuing life cycle assessments through the all processes of production, use, and disposal. In this paper, the activities for the process of vehicel use is reported; this process seems to get about 80
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