Got this idea from youtube as recently I have discovered that water injection systems enhance vehicle performance because water converts to hydrogen at 1600 degrees F.
Ever notice that your vehicle drives better in the rainy conitions or foggy conditions than normal ?
Using a ultrasonic transducer to make the fog, it is sucked into the main air intake via a venturi cone I had to create inside of the air intake. This is because there was no vaccum on the port on the side of the pipe.
google "venturi effect",
youtube "water fog injection"
not sure if it saves much gas, but I tell you, the car now runs sooo smoooooth because of this addition :)