Toyota has been hinting for years that it would be expanding its Prius model lineup, and the new Prius v we just took for a test drive is likely just the start of a bigger Prius family. Over the past two years, rumors of a minivan, a convertible, and even an SUV variant have been tossed about. But the one derivative of the bunch that has enthusiasts interested is the American-inspired Prius Sports Coupe project?