We followed it really close for the major part of our trip. It is one of the oldest and most historical routes of America: Road 66. It goes from Chicago to the west coast of California. It is filled with old dinners and motels.
You definitely have to love driving to decide to make this road a destination in itself. It stretches a long way with 3945km. We just did some small sections for fun. We also saw a presentation on it in Baie-Comeau, Qc at the end of this trip which made it more special for us as we saw some of the things discussed in the ”Grands Explorateurs”