Completely free toolbar from www.hydrogencelltoday.com - Is it possible to build a hydrogen fuel cell yourself? Yes, of course it is, it's not that difficult to do and for less than $50 you can build a fuel cell that will increase your mileage by as much as 65% or more and that's not bad.The first thing to know is that the device that you built for your car is not meant to produce enough hydrogen to run your car only on hydrogen. To run 100% hydrogen means you have to build a device which is much more difficult to put together and probably more dangerous because at least at the DIY level the technology isn't there yet. The unit that you're going to build works this way. Quite simply, you will be generating HHO gas from water by sending a charge from your battery into the fuel cell which separates the water molecules in the fuel cell into hydrogen and oxygen. This then generates a gas known as HHO or Brown's gas. HHO is not only safe and clean but when combined with gasoline in the carburetor will markedly increase your mileage. Of course it depends on how you drive the car and the type of car you own but a 75% increase in gas mileage is not unheard of. You can save thousands and, according to many testimonials from people who have used the system it is not a scam. All you need is a good guide to build your own DIY hydrogen fuel cell and you will find any number of those online. These will provide you with a step-by-step instruction on how to build a hydrogen cell and install it in your car and, remember we are not talking rocket science here. The method really is very simple and only a very basic knowledge of mechanics is required. Barring that, you could always take it to your mechanic.The trick is as with anything else, get the best information that you can and make sure that you can get at least some support. Get that info at www.hydrogencelltoday.com