How would you like to run your car on water?

Would it be just too cool to walk out to your car, turn on the spicket of a special hose that had a filtering capability built into it like a Brita water pitches or faucet device (I can see them making this actually) and just fueling up your car before you leave? This would essentially mean you run your car on water! No gas station, no wasted money on gas (well maybe a new no gas tax will happen because the government wants their money and will find a way to get it, possibly calling it the environmental tax) and you could run your car completely clean and good for the air? That would be really cool. It’s coming!