Hello there, my wife and i are coming over from Australia to texas. We plan on driving around while we are there. We are planning on staying in Dallas, Houston, New Orleans, Memphis, Tulsa & OKC. What are some of the things that we will need to be aware of while driving around these places?? Is hiring a car for the entire time we are there the best way to go or is there an easier / cheaper way to go?? Do you have to pay a toll for some roads?? What are some great places to visit while we are traveling between these cities?? How much would be an appropriate amount to spend for a hire car??