Okay, if you place an electrode at one end of a tank and an electrode at the other end, pass current into the water, the H2O will separate leaving O at one end and H at the other. You take that, using a brass or aluminum pump ( anything that does not spark ) and you can pump that gas anywhere...like into the carb.
Perry has brought up a point, storing the gas. Typically you can buy 4500 PSI carbon fibre tanks for combustable gas storage and fill them.
You need to remember, Hydrogen needs to recombine to burn, so it is more like gas than O. O will explode.
If you happen to have a side car, junker or a car that you are willing to experiment on, you can convert it to burn hydrogen. I would be reserved to use my daily driver as my first victum.
