My 2002 Windstar went from 14 mpg to around 24mpg on a trip and when its around 60 mph average speed. I have a 22 gal gas tank and this amounts to 220 more miles per tank full. Figure that out by $3.75 per gal for gas average now this is a massive savings. Of course around town I only get 4 to 5 more mpg because I can go 55 to 60 mph. My system works on hydrogen on demand it uses all it makes and stores none. So any dangers of fire and explosions from storage is nil. Still problems exists freezing in winter unless you bring it inside I tried alcohol it still froze once the jugs gets 50% full of Alcohol and 50% Hydro mix you have weakened the mix and don't get enough Hydrogen. But I have had this for 3.5 yrs or so and will keep it going. I will try to include this Hydrogen on my Rod and see if I can stretch the MPG. And the electrical charged coils burn out after 6 months or so. But replacements are 15 bucks the cost of about 3 gallons of gas, not bad. I have all the stuff to try to hook one of these up to my Oil Furnace and try to save on Mid east oil. But havent had the time yet. My lawn mower likes it .