My husband and I want to drive from Portland to Savannah next March. We are wondering if there are best routes, or some we should avoid given the time of year. We want a fairly direct route since we would like to spend most of our time exploring new territory....that would be Savannah to Boston and maybe Kentucky and Tennessee. We will stay in motels, are happy to drive up to 10 hours a day and like to see new scenic places and picnic if weather permits. We welcome any suggestions.