When you rent a car, you can choose from several different classes, or groups, of car. Before you sign the contract, it is very important to check the paperwork and to make sure you agree to the terms and conditions of the rental. A good car rental company will include the following: collision damage waiver, which is daily insurance that covers damage to a rental car if you have an accident; loss damage waiver, which covers the loss, theft or vandalism of the car; personal accident insurance, which provides life and medical insurance for the driver and passengers; unlimited mileage, which means that you can drive as far as you like without paying any more to the car rental company. Note that if you rent the car in one place and return it to another, you may have to pay a drop-off charge which helps the car rental company with the cost of returning the car to its original location. You may also have to pay a refueling service charge to pay for any gas that you didn't replace.