Book excerpt: In this engaging biography of a remarkable man, Susan Croce Kelly begins by describing the urgency for “good roads” that gripped the nation in the early twentieth century as cars multiplied and mud deepened. Avery was one of a small cadre of men and women whose passion carried the Good Roads movement from boosterism to political influence to concrete-on-the-ground. While most stopped there, Avery went on to assure that one road—U.S. Highway 66—became a fixture in the imagination of America and the world.