We're all thinking about Ohio this weekend, so why not a blues piece that starts out there? But I-75 is a long road, from Canada to the southernmost South. My grandfather ran a service station for long-haul trucks out of Knoxville, TN, right there on the line. It crosses the Appalachians near the majestic Cumberland Gap. It runs through a fair piece of the Great State of Georgia on its way to the outskirts of Miami, Florida.