A very quick and efficient way to find out if the car has a clean title, mileage accuracy, any wrecks and hopefully the major service items that have been done to the car. Also all of the owners and where they lived. This is important when you want to make sure the car was not from a flood area, rust belt area or in a high humidity area that may shorten the life of the car. I also look for the least amount of owners, generally the fewer the more likely the car was a good one and taken car of. So this makes for a really fast and easy way to sort out the bad ones from the good ones before spending the time to go look at a car before purchasing.