There have been various stories going around the internet on the subject of water being used as a fuel source/carrier. I have compiled a few of these notable stories here for your convenience. The first story I found interesting is (salt) water being burned if it is subjected to a specific frequency. The person who discovered this is John Kanzius who was researching how to use radio frequencies to kill cancer cells. See video here:

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The implication of the usefulness of water as fuel is obvious as it would completely change our civilization. Although the net output of the energy from the burning compared to the initial input energy needed must be calculated to determine how useful it is, the fact that water can be used this way is still curious and an oddity. It is interesting that it burns “as hot as the sun”, supposedly, and that it is still cool to the touch?! This is odd.
Next is a story about Stan Meyer, an inventor who designed a car powered by water. His story is pretty interesting and controversial. Of course the actual efficiency and net output of the water power needs to be verified and proven useful, but the usage of water is the key point of interest. Video here:

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Some links to check out:
www.waterfuelcell.org
Pennsylvania Man Claims He Made Fuel From Salt Water