The word chic was coined in Paris, so it's no great surprise that the biennial Paris Motor Show is filled with stylish and elegant machines. Among the most fashionably dressed sheet metal are the concepts, cars built to demonstrate an automaker's creative vision and technical prowess and to test it, in a public way, without taking a huge financial gamble on a full production car. Here, we've selected 10 concepts on display in the City of Light that we think represent the best of the breed.