Gliders, also known as sailplanes, are a unique type of transportation that operate primarily through the use of wind and gravity. These lightweight, non-motorized aircraft are designed to glide through the air and can stay aloft for hours at a time. They may not be as common as airplanes, cars, or trains, but gliders have their own special place in the world of transportation. One of the most notable features of gliders is their ability to fly without a traditional engine or motor.