According to my research, the cars i listed are quiet because

来源: dansy 于 2008-08-12 10:55:40 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (241 bytes)

the window glasses are made with 3 layers like a sandwich-- a sound-isolating rubber inside the two glass layers, which makes an important role in blocking the wind noise. Does this feature faint with the aging of the car? I don't think so.

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