In Slow Road to Brownsville, David Reynolds embarks on a road trip along Highway 83, a little-known two-lane highway built in 1926 that runs from Swan River, Manitoba, to the Mexican border at Brownsville, Texas, on the Gulf of Mexico. Growing up in a small town in England, Reynolds was enthralled by both the myth of the Wild West and the myth of the open road. This road trip is his exploration of the reality behind these myths as he makes his way from small town to small town, gas station to gas station, and motel to motel, hanging out in bars, drinking with the locals, and observing their sometimes-peculiar customs. Reynolds also wanted to see the country where the Sioux, the Cheyenne, the Comanches, the Apaches, and other native groups lived and died and to look at how their descendants live now. He describes the forced location of the Cheyenne people, discovers the true story of the Alamo, and finds similarities between Sitting Bull's tours and those of the Black Panthers. In the end, Reynolds sees hope, potential, and tolerance in this forgotten middle of North America.