I tried to edit into paragraphs - but it won't let me. Sorry. All energy is the migration of a pressure equilibrium establishing a new mean free path. Pressure into a surface space is the key. The amount of energy is divided by the gauge scale differential multiplied by the surface space into which the pressure is manifested. If you had a pressure of 4.7 PSI permanently encased inside the tailgate of a truck - outside pressure would press into the tailgate at 10 pounds of pressure per square inch. If the tailgate had 900 square inches - the pressure into each side would be 9,000 pounds. The problem is that the pressure pressing into the tailgate is coming from both inside the bed, and from the outside at the same time. Those two pressure waves cancel each other out. But - what if you could get rid of the pressure wave from inside of the truck bed? If you can create a distortion field on the inner side of the tailgate - muting the pressure wave on that side of the tailgate - you would be left with a pressure wave of 9,000 pounds from behind the truck pressing into the tailgate. You would have created a unilateral 9000 pressure wave. A truck weighs around 5,000 pounds - so 9,000 pounds of rear end pressure would be able to push the truck all day long as long as the distortion field was maintained on the inside of the tailgate. It takes electricity to maintain the distortion field - so where do you get the electricity from? The electricity comes from the rotating wheels and the friction they have with the ground. So now the tailgate has to push the truck (5,000 pounds) and overcome the resistance of the wheels as they create electricity. Let's say that 1000 pounds per wheel is the resistance that will generate the electricity needed to maintain the distortion field. That equals 9,000 pounds. But a truck under momentum only needs 6% of its weight to maintain any given speed attained. 6% of 5,000 pounds is 300 pounds of pressure. That leaves 4700 pounds of available pressure as wiggle room. With pressure from outside the on board board energy loop pushing the truck - the truck will be able to drive perpetually without need of any on board fuel, other than the electricity it creates on the fly from the spinning wheels. Need more energy? - Increase the pressure differential - or - increase the surface space with two tail gaits - or - incorporate the pressure differential system into the body panels of the vehicle itself. Cars have plenty of surface space. Now - you're thinking that this is perpetual motion, and that this scenario impossible. I'll leave you to your own devices to come to understand why it's possible and why it's not perpetual motion. Let me know below why it's not perpetual motion and if you can figure it out. I left clues above. I'll explain it - if you put in an effort.