SmILE's a showcase car designed for Greenpeace in 1996 to demonstrate how fuel efficient a car can be. The name stands for "Small, Intelligent, Light, Efficient'. It's based on the Renault Twingo, halving its fuel consumption to 3.3 l/100km (30 km/l or 85 mpg (imperial) / 68mpg (US)). The importance of this's that cars represent more than half the world's oil consumption (contributing about 20% to the world's greenhouse gas emissions) and that the number of cars in the world's rising at twice th… (More on Smiles)