More specifically, the story explores:
* The cyclical nature of trauma: The grandfather's experience of racism informs his choices, and his anxieties about safety are passed down to his children and grandchildren, shaping their lives and perspectives.
* The importance of family and resilience: Despite the constant threat of violence and injustice, the family remains united and supportive, finding strength in their bonds.
* The limitations of escaping racism: The gold Cadillac, a symbol of freedom and prosperity, cannot completely shield the family from the realities of racial prejudice. Their escape to the north is still fraught with danger and disappointment.
* The power of memory and storytelling: The story itself is a testament to the power of memory in shaping understanding of the past and its implications for the future. The narrative helps to preserve family history and confront the harsh realities of racism.
Therefore, while the gold Cadillac serves as a powerful symbol, it's the story's exploration of how racism affects family dynamics and the enduring struggle for freedom and safety that forms its central theme.
