Run your car on water
According to H20Cars, you can -
Possibly double your mileage: Our road tests have achieved 50% increase on a heavy 350 V8 van, 56% on a Ford truck, 107% on my Toyota Corolla, 285% on a Chevy 4WD pickup (this is not a typo). Carter Blankenship III is saving $200-$400 EVERY WEEK on his big rig diesel truck (he constructed a “6-pack” himself from our knowledge, and covered his costs in a couple of days).