A car rental reservation spreadsheet is a helpful tool for anyone renting a car. By being able to see all the details of a person's plans it makes it easier to make decisions about renting a car. All you have to do is enter the name and the address of the driver and the car type that you want, and it will give you all the information that you need to make your choice. The spreadsheet allows you to compare many different companies, check out the cost of renting a car, and see if you can save a lot of money by staying off the road.