For more than ten years, the European Union is pursuing a program of reduction of anthropogenic carbon footprint. This policy involves a more efficient use of energy resources and the development of renewable energies. As far as road transport is concerned, the EU has set the goal to have 10% of renewable energy by 2020. In this context, an industry of alternative fuels and vehicles (without gasoline and diesel oil) emerged, although not without difficulty. The great question is: which alternatives could meet such a challenge and when?