The road to sustainable transportation

Abstract

Since most modes of transportation rely on liquid energy carriers like gasoline or diesel, the approaching end of the fossil fuel era poses a special challenge. One should bear in mind that nothing matches the energy density of liquid fuels. It is, therefore, important to consider the efficiency of various modes of transportation and explore alternative options for energy carriers. This includes a feasibility study of the use of solar energy in transportation. In this perspective various modes of transportation are briefly reviewed and the possible alternative energy carriers assessed.