A method of making a driving path log file library for searching a car navigation path includes operating a car navigation system and deciding whether or not to store a driving path of a driver. When the driver decides to store the driving path, making a driving path log file with the driving path of the driver, storing the driving path log file, and making a driving path log file library out of the stored driving path log files. The driving path log file includes the driving path that the driver has driven through and then selected, and the driving path log file library includes a plurality of the stored driving path log files.