Wendy, you are so right! Last summer, we rented a convertible for two weeks in Provence and requested a GPS. However, were told well ahead of our departure that a GPS could not be guaranteed as not many were available. No problem: we brought along our own, a Tom Tom, fully loaded with Europe straight from the manufacturer. The road trip was a breeze! Just now, I am in the south of France again, one leg of a countrywide sweep in search of fabulous  and not all that pricey  getaway stays. Once again, I packed my faithful Tom Tom and was surprised to find that my teeny little rental was already equipped with a GPS! Still, good thing I have Tom Tom, as I cannot figure out the intricacies of my rental's GPS. Neither could the rental agent! Nor a few young techies at my first hotel in Paris. Bringing Tom Tom along meant another thing to keep track of in packing, but I am glad to make the effort. (A big "must" is to remember to disconnect and hide or take it with you when exiting the car as portable GPS systems are high on the theft list.) Nonetheless, GPS is the way to go when renting a car, no matter where your "road trip" takes you!