A year into his marriage and having never driven an RV, Frank and his wife Laurel set out from New York City in a Winnebago to drive the nation's first transcontinental route, the Lincoln Highway, which zigzags through small towns and big cities from Times Square to San Francisco.

Using the spirit of Abraham Lincoln to guide them across the land, they hope to see more clearly what holds the country together -- and how we can keep it together, even amidst political divisions have grown increasingly rancorous, bitter, and exhausting.

Along the way, Frank and Laurel meet Americans whose personal experiences help humanize the nation's divisions, and they encounter historical figures and events whose legacies are still shaping our sense of national identity and the struggles over it.

This unforgettable journey is full of what makes any great road trip memorable and enjoyable: music, conversation, and laughter. By the end, readers will have a clearer picture of how we have arrived at a period that carries echoes of the Civil War era, and -- using Lincoln as a guide -- where the path forward lies.