Bumper 为何是以塑料制成？
现今的新车为了安全性能在车体架构下了许多功夫，像是采用强度更高的高刚性钢材，甚至是铝合金及铸造钢等更为坚固的材质，但是唯独围绕车子前后的保险杠（ Bumper ）仍旧是以塑料制成，不止容易弯曲，有时候甚至一碰就碎，难道这就不会对碰撞安全造成隐患吗？
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现今的新车为了安全性能在车体架构下了许多功夫，像是采用强度更高的高刚性钢材，甚至是铝合金及铸造钢等更为坚固的材质，但是唯独围绕车子前后的保险杠（ Bumper ）仍旧是以塑料制成，不止容易弯曲，有时候甚至一碰就碎，难道这就不会对碰撞安全造成隐患吗？