The Great Gatsby Reading Notes: Chap. 4

   In chapter four, Gatsby and Nick went to go eat lunch and Gatsby decides to tell Nick about his past. He was explaining how he grew up wealthy from the Midwest, he claimed to have been educated at Oxford, to have been awarded medals in World War I by multiple European countries and etc. So why does Gatsby tell Nick about his past? What gave him the idea to do that? 

   Also on their way to lunch Gatsby gets pulled over by an officer. When the officer goes up to them he hands him a white card, once the officer sees it he apologizes and then lets them go. What was the white card that Gatsby handed to the officer? How come when the officer saw the card he just let them go?