I drove 1800 miles in a Hydrogen Car

I must interject. Why don't we just burn hydrogen in an internal combustion engine? A friend of mine created a hydrogen generator with some stainless steel washers and stainless steel threaded rods and an electrode going from the battery so basically what uses one of those clear pool filter containers and it produce hydrogen what he pass electricity into it in the form of bubbles coming out of the deionized water with a little bit of baking soda in it any ran his Toyota pickup truck with it now it seems like it would be a lot cheaper and simpler just to do that instead of through this magical process.