Some aeroplanes waste valuable fuel. Therefore, there are attempts to redesign such planes for maximum efficiency. Recently, two engineers have redesigned planes from the very beginning combining fuel efficiency, aerodynamics and the necessities of goods, passengers and fuel storage. Their final design seems to incorporate several elements found in birds. They examined the three major parts that make a plane what it is: body, wings and tail. They worked through all three in turn, only opting for the design that would lend their final product the maximum flight efficiency.