But the difference between the 'joe cell' and a normal battery is that it doesnt use electricity to power the car, it uses the gas produced when electricity is passed through water, this process is called electrolossis and splits water (H20) into Hydroden and Oxegen, this is a very explosive mix.
The only problem is that 'joe' rekons that the gas created by his 'cell' was not explosive at all. and he did not mention once in the article about topping the cell up with water, which i think would be inevatable, ie. matter cannot be created or destroyed it can only be changed. So he must be changing the water into somthing and this would cause the water to run out eventually.

Elliott.................very skeptical