Which will be the fuel economy of the future? Biofuels (ethanol, methanol, bio-hydorcarbons) or Hydrogen? please explain your choice... I choose Biofuels because they are cheaply maintain in liquid form (hydrogen is a gas and not easy to store) Biofuels are made from agriculture waste, sewage waste, vegetable fat, wood pulp, carbohydrate crops. Biofuels can be made energy positive (takes less energy to make then is produced) unlike Hydrogen. Biofuels are renewable and produce no net increase in CO2. Biofuels can and are mix in with fossil fuels silently so there is no need for radical change in designs and implementation can be done progressively at any rate.