Since then, regional authorities have pretty much solved bottlenecks and hazardous traffic conditions by confining sales to pre-determined roadside areas. That doesn't mean the sales are any harder to find. The set-up makes for a particularly attractive budget road trip, since roadside motels don't cost much anywhere along the route. The route isn't too far from plenty of sights worthwhile in their own respect, such as the Mammoth Cave National Park in Kentucky, Chattanooga, Knoxville, Cincinnati, Louisville, and Birmingham. Book way ahead, because we've already told you how crazy those Yard Salers can get.
Motels fill up early.
Also be prepared for logjams around population centers. Then again, a creeping crawl through the miles of roadside stands is half the fun.