$($Filipino inventions$)$the most popular mode of public transportation in the country.: It is also perhaps one of the most enduring symbols of Filipino ingenuity.: Jeepneys were designed and improvised from scratch out of military jeeps that Americansleft in the country after World War II$.$: As demand for more responsive transportation technology arose, the e$-$jeepney wasintroduced in Metro Manila and Bacolod City.: The e$-$jeepney is the inventive response to criticisms to the traditional jeepney that belchedsmoke, directly causing air pollution which made it unsustainable and uneconomical.: These are designed to be environment$-$friendly, eliminating noise and air pollution as theyrun on electricity.