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Most car rental agents should be viewed as friends. Unlike car salesman, they have less to personally gain from renting you a car. For this reason, they are often extremely honest regarding the cars and the rental agreement. Furthermore, if you approach them from the standpoint that they are a foe, then you will most likely repel them. Consequently, they will be less helpful for you in your search for a good value in your car rental. A positive attitude will get you far in this situation. That being said, do expect all your questions to be answered to your satisfaction prior to signing any rental agreement.