The simple explanation is that water is not a fuel, as we well know, and it can't give an useful reaction with any other substance, to produce energy.

The only solution is to spend energy to dissociate electrolytically water by means of a battery, that must be charged on the car.
The products of this dissociation are H2 that is a combustible, and O2 the comburent; these two gases can react in the engine, moving the cylinders like the other fuels, but the products of this is again water, by this reaction:

2 H2 + O2 -> 2 H2O

The problem is just that the batteries, soon or later, go out of charge and they must be recharged to recover its electromotive force and give the electric charge necessary to decompose water.

The electric care based on this working scheme are already a reality and they circulate in our towns, although in little number.
Their main problem is still that the batteries still haven't a long autonomy like the fuel engines, burning gasoline, methane and propane gas
alcohol or gas-oil.

The alternative scheme, the most used, is to use the electric power of the batteries to make work directly an electric engine, without using water and the yield is higher.

The energy to charge the batteries mustn't necessarily come from oil or other fuels, but from solar and geothermal energy or from aerogenerators, that can also dissociate water in H2 and O2, with the possibility to use H2 for the combustion of vehicles of the first type or industrial and domestic heaters and burners.

The largest part of this clean and totally renewable energetic cycle is still to be created today, for the scarce will and the oil-related dirty interests of our politicians and entrepreneurs, but it will be an absolute need for the future, if we want still to use a car in the next decades.

Learn more about this author, Aldo Bonincontro.
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