This cheerful little road novel, published in 1919, is about Claire Boltwood, who, in the early days of the 20th century, travels by automobile from New York City to the Pacific Northwest, where she falls in love with a nice, down-to-earth young man and gives up her snobbish Estate.From a critical perspective, Free Air is consistent with Sinclair Lewis's lean towards egalitarian politics, which he displays in his other works (most notably in It Can't Happen Here). Examples of his politics in Free Air are found in Lewis's emphasis on the heroic role played by the book's protagonist, Milt Dagget, a working class everyman type. Conversely, Lewis presents nearly every upper-class character in Claire Boltwood's world (including her railroad-mogul father) as being snobby elitists. The story also champions the democratic nature of the automobile, versus the more aristocratic railroad travel.