How does Gatsby describe his past during the car ride to the city with Nick?

During the car ride to the city, Gatsby describes his past with a mix of nostalgia and bravado, emphasizing his humble beginnings and the wealth he has acquired. He recounts his time as a young man in North Dakota and mentions his family’s poverty, portraying himself as self-made. Gatsby’s narrative reveals his desire to reinvent himself and escape his origins, highlighting the American Dream's allure. His tone is both earnest and somewhat defensive, as he seeks to impress Nick with his story.