For the past four years, Julio Cesar Lestido S.A., the official Uruguayan importer of cars and trucks manufactured by the Volkswagen Group, has been employing passive ultrahigh-frequency RFID tags to track the metal tools it uses to maintain vehicles. The company says that it is now developing a plan to utilize the technology to record each vehicle's life history, including its date of import and sales information, as well as all maintenance provided.