The biggest problem we have today is generating enough hydrogen to fulfill the demand of commuters in cars today. Hydrogen, though it is the most abundant element in the universe, doesn’t really occur naturally on Earth, and thus be created. It can be made from burning fossil fuels, which seems redundant if the intent is to get off usage of oil, and can be extracted by electrolysis. Even if we find a cost-effective way of producing hydrogen, it much be kept at very low temperature and at high pressure to be used in cars. Scientists are always searching for these answers and making new breakthroughs everyday, so it may only be a matter of time before hydrogen fuel cells replace oil using internal combustion engines.
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