Lyric discussion by jcase918 

The cold leather seats are analogous to the notion that the thing he desires (the leather seats) is no longer something he desires (being so cold). This is important because it marks the turning point in the song when he realises that anything you desire can turn against you. The reason he will die with a smile on his face is because he will be happier dead than alive. A bit morbid, but my opinion nonetheless.

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