Planned a trip and left within 36 hours.
Arriving at the airport we went to Europcar and picked up not only thre car but a Garmin and a tablet, both with multiple chargers. Off we went. The tablet was loaded by day with each site in order of the driving sequence. Tap on the site and you were given information about what you would see and then GPS directions on finding that site. It was unbelievably easy. After the first day we did look ahead to see what was suggested. (The last site was always the lodging.) We could delete things we were not interested in and add things using a button that said "Nearby". The GPS adjusted to the changes. There is also a button you can use to contact help.