This is a proposal to reduce air drag which is the primary reason for cars’ poor mileage.   Even though cars are streamlined, the frontal area (height x width, ≈ 20 sq. ft.), pushes the air and uses more fuel to overcome.  The proposal is to draw air in at the front, and to expel it out the back, at the speed of the car, to reduce the air drag to zero.

     The air is pulled in around the hood, fenders, and windshield and through ducts above the headliner, under the floor and through ducts in the center console and ducts in the doors to the rear where it is pushed out the back, neutralizing the drag.