When the stunning Bentley EXP 10 Speed 6 (bentleymotors.com) made an unexpected debut at the Geneva International Motor Show in March, the marque’s chairman and CEO, Wolfgang Dürheimer, indicated that the two-seater is more than just a show car and could become a production model—the Bentley sports car. Why not? Certainly the idea of a Bentley sports car is no more far-fetched than that of a Bentley SUV, and the Bentayga is on its way, possibly for the 2016 model year. The EXP&nbs…