We landed in Dubrovnik after missing our initial approach to the airport and being told that we could not land because of technical issues. Not the words you want to hear above the Adriatic heading for the coast of Italy from Croatia. It was very quiet and tense on Norwegian Air flight crappants. We landed safely, and here is our trip from Dubrovnik to Mostar by car, which was very beautiful and simple, except for the part where the GPS took us up into the mountains to some "locals only" border crossing. the guard held us for a little while and told us in broken English to go back to the shore.
The road trip was in my top 10 for sure, right up there with Toulouse to Andorra and Pokhara to Chitwan. If you are considering renting a car and doing this journey -- Just do it. It is an easy drive and dangerously breathtaking at points.