How does the sale of the Packard provide evidence of strong ties to family and land among he Logan's

The car was a strong symbol for Mr. Morrison and all blacks that some sort of equality is possible. Land, however, is more important to the Logans. They needed the money from the car to save their land. Repeated again and again throughout the book is a refrain spoken by Big Mama, Mama, and Papa: "we won't lose the land." In a culture where the memory of slavery is still strong, land is a symbol of independence and autonomy. Because they own land, the Logans can afford to shop in Vicksburg and are not beholden to the whims of landlords as sharecroppers are.