The world consists of many countries having differences in many areas, ranging from size to economic level, from population to education, etc. Consequently, they are not going to convert to hydrogen-fueled transportation at the same time. Some will have the right conditions to convert to clean hydrogen transportation early, and other countries will have conditions which will result in a delay in conversion to hydrogen-fueled transportation. In order to find out which countries are the candidates for early conversion to hydrogen fueled transportation and which countries might convert to hydrogen-fueled transportation later, an analysis has been carried out covering almost all of the countries in the world. Results indicate that the countries with higher income per capita and smaller size could convert to hydrogen-fueled transportation earlier. Copyright (c) 2013 John Wiley & Sons, Ltd.