At the end of the Chapter 7, Myrtle runs out in front of Gatsby’s car because she mistakes it for Tom’s car. The mistake occurs because, earlier in the day, Tom suggests that he and Gatsby swap cars for the drive to New York. Gatsby drives straight to New York, but Tom, driving Gatsby’s car, stops for gas at the Wilsons’ garage. Myrtle sees Tom from the room where her husband has locked her up. Later that night, Tom and Gatsby drive their own cars back from the city. When Myrtle sees the yellow car coming down the road, she assumes it’s Tom, breaks out of her room, and runs out to seek his help. Myrtle’s mistake proves fatal when Daisy, who’s driving Gatsby’s car, accidentally hits her, killing her instantly.