Eco of tomorrow

They're only ideas and models of course, but these concepts are by serious designers. The Royal College of Art vehicle design postgraduate course in London is the most famous in the world, with designers in this year's graduate show from France, Korea, Italy, Sweden, Finland and Spain as well as the UK. Students of the course often go on to work in the world's most important car design studios. You may well drive a car designed by one of its alma mater. Here are just three of this year's projects with an alternative energy or energy saving rationale.