describe advantages and disadvantages of using hydrogen instead of fossil fuels

advantages: . combustion only leads to water production, no pollutants . no carbon dioxide, so no greenhouse gases . no sulfur dioxide so no acid rain . releases more energy so more efficent . renewable disadvantages . difficult to store or transport as its a gas . very flammable so risk of explosion . most cars are designed for fossil fuels and so would require conversion . not many filling stations provide hydrogen so would be hard to fill up