Today is the Mini's 50th birthday. Half a century ago, the original Mini was unveiled, and to mark the occasion, BMW, the company responsible for its revival as a premium brand, has unveiled the Mini Coupé Concept. Based on the iconic hatchback, the Mini Coupé Concept cuts a strikingly slick silhouette with room for two inside. At the moment it's purely a show car, to be unveiled at the Frankfurt show next month, but word on the street is that they could put it into production. The Coupé Concept is also likely to spawn a convertible Roadster version, with a swept-back windshield and a more sporty attitude than the existing Mini Convertible.