Five of the best green concepts in Detroit

America isn't exactly renowned for its parsimonious appetite for energy, but it seems that the move towards greener technology has gained momentum if these five concepts to be shown in Detroit are anything to go by. America isn't exactly renowned for its parsimonious appetite for energy, but at the North American International Auto Show in Detroit it seems that the move towards greener technology has gained momentum. Every manufacturer will be showing vehicles that consume less right now. But we're more interested in what the future has got in store for us, which is why we're looking at five of the best green concepts to be rolled out at the Cobo Exhibition Center over the next few weeks.