The company may require a cash security deposit as well. Tell them that the rental is terminated for nonpayment, and that you will either have the car repossessed or call the police to report the car stolen.For renters without a Government or personal credit or charge card, cash deposits up to the estimated amount of rental charges may be required. This rental agreement contains provisions that govern how claims you and Flexdrive have against each other can be brought. Make advance reservations. If you walk up to the counter at the rental car location without a confirmed reservation, there may not be cars available for rental. You will pay the daily rate stated in the Agreement for each Day, or part of any Day, of the rental. The minimum charge is one Day, plus mileage or a fixed fee. Creating a contract is a must for those who are planning to offer a car for hire services. 1. Enter the names and addresses of the owner and renter.