Check out Shaka’s self-guided driving tours, an app that uses GPS to trigger audio narration automatically as you drive. This app provides the perfect combination of directions, practical tips, storytelling, and music. Travel at your own pace and learn more about the area you are exploring. The following review sums it up pretty well.
I would not do the drive without it. This guide will even give pointers on bathroom stops, food stops, where to avoid and where to park, all accurate within feet of the locations. Plus the narrator guiding you is entertaining and full of history to share on the drive. I would highly recommend.