Okay, but producing fuel requires a lot of energy, so how are you going to power that? With a different engine onboard your jet? The point of this device is to

Okay, but producing fuel requires a lot of energy, so how are you going to power that? With a different engine onboard your jet? The point of this device is to take energy available on the ground and store it for use in the air, and use a storage method with a tremendous amount of energy per unit weight (hydrocarbons).