Hydrogen is being used in virtually every transportation application: light, medium and heavy duty vehicles, locomotives, ships, buses, aircraft, and rockets. We are not aware of any mode of transportation that cannot be fueled by hydrogen. Small drone aircraft are increasingly being fueled by hydrogen in place of batteries for a roughly three-fold increase in range. Airbus is planning to have a long-distance commercial aircraft based on hydrogen by 2035. Heavy duty and aircraft applications of battery technology are challenged by the much greater weight to energy ration of batteries versus hydrogen storage.