If you absolutely, positively want to have the best car gas mileage possible, I have one suggestion for you:
Give up the family vacation. Stop going out to visit friends and family.
Learn to be happy with $4, $5, $8 (or more) a gallon gas.
Yeah, RIGHT!!!
Reject high gas prices - forever!
I found quite a few hydrogen conversion plans available, but the one I focused on was at Water 4 gas. This site has thriving community support with new, active members showing up all over the country - even other countries. In the same way that an expensive hybrid automobile recaptures some of the excess energy in your gasoline engine to give you the best car gas mileage from your engine, the hydrogen cells in these designs use excess electricity from your car’s alternator to release moderate amounts of hydrogen from distilled water and electrolytes. This potent hydrogen gas mixes with your car’s normal liquid gas in very minute amounts like a high-octane additive, causing the fuel to ignite faster and burn more efficiently.
After a hydrogen car fuel cell makeover, your car runs cleaner, even a bit quieter, using less fuel without having to spend tens of thousands on a new car, or even thousands extra on a hybrid.
Car Fuel Saving