Driving on Highway 61 through Minnesota provides a rare opportunity for one to see virtually every type of landscape in the North Star State. Along the highway's path are pastoral farms and towering bluffs, as well as the largest of the Great Lakes, Lake Superior. There are picturesque small towns and populous cities, yet stretches of the highway have been abandoned. Despite Highway 61's east-west counterpart Route 66 getting more attention, the north-south...