He went to the collision of the two cars and looked carefully. His car was not a big problem. The high-strength steel sheet made by the United States covered almost every part of the car, so that the rear-end accident only caused a slight dent and paint drop in the front of his car. It seemed that it would be all right to spray a sheet metal paint for hundreds of dollars.

But the car in front seemed to be badly injured. The square rear bumper, which looked broad and heavy, was knocked down severely. The two upright trapezoidal taillights on the rear of the car were smashed, and the...