Have you heard of water cars that don't use fuel?

It’s a myth, and impossible* - like perpetual motion. The theory usually goes:

1. Electrolyze water to get hydrogen and oxygen
2. Use the hydrogen to power the engine, generating power for the electrolysis
3. …
4. Profit!

However, even at 100% efficiency, electrolyzing water takes as much energy as you get from burning the resulting hydrogen. In reality, nothing even approaches 100% efficiency, so it’s even less practical. Basically, it’s an attempt to get energy for nothing.

• Yes, yes, if you could build a fusion engine into a car, you could use water to power it. But that’s seriously in the realm of science fiction for the forseeable future.

Yes it is right, thousands of people not only America but around the world using this amazing technology. The people says it does not work or its a scam, I just say to people who say this is a scam then why thousands of people are using this and getting results.

People who don’t know how to do it properly will say its a scam. To get more information about this particular technology just visit http://runyourcaronwater1.blogspot.com I have created this site to help people to convert their car to run on water using this simple technology.

What mohra is talking about is not a “water powered car” but a car that uses water with hydrogen electrolysis to improve gas mileage in addition to gasoline. For more info, see here: http://scienceblogs.com/goodmath/2008/05/bad_gas_math.php

It’s important to note that nobody has performed a proper controlled test on this. Until I see one, I’m highly skeptical of any company trying to sell overpriced devices for improving gas mileage. Every other one is bunk; this one probably is too.