A chemical reaction between the hydrogen and the oxygen in the air release is the energy used to propel the vehicle the only by product is pure water the fueling process closely resembles the one used for natural gas it s almost as simple as for gasoline and spite of all these points in favor of this drive technology will it typically little research has been done largely because of the cost. of a really low wholesale is convinced hydrogen technology is the future and even thinks battery electric drive will only serve to bridge the gap. that toyota s fairly flounce describes hydrogen as a highly environmentally friendly solution and it s easy to produce from renewable sources such as wind power hydrogen serves as the storage medium which is far more ecological than a purely battery electric technology for now the toyota mariah s one of a very few hydrogen powered production vehicles. fisher conscience that it takes