I was glad that the sight of Gatsby’s splendid car was included in their sombre holiday
This line is a comparison of the life of Gatsby and the Party and the death of the person in the carriage. This is not the only time Gatsby or people with money have been compared with life. Myrtle in the second chapter, when she is still connected to Tom (and thus money), is described with “vitality” and other life-related words. These sets of evidence set up a distinct life and money vs death and poverty theme in the book.
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