Read the passage given below carefully and answer the question that follows:
...The completion of the first U.S. transcontinental highway during the 1920s for example, inaugurated a new genre of travel literature about the United States-the automotive or road narrative. Such narratives highlight the experiences of mostly male protagonists "discovering themselves" on their journeys, emphasizing the independence of road travel and the value of rural folk traditions.
According to the passage, which of the following options could most appropriately be attributed to the American travel literature of the 1920's ?