Trust us. Nothing quite like the stunning and awkwardly named BMW Vision EfficientDynamics concept has ever been seen at the normally staid 2009 Frankfurt Auto Show. For this year's German show, the Bavarians have conjured up a vision of future transportation that is not only visually arresting, but boasts the performance of an M3 with the environmental impact of a Prius. In other words, a truly "sustainable sports car," as so characterized by one BMW executive (and numerous bloggers). BMW Vision EfficientDynamics Concept @ 2009 Frankfurt Auto Show: http://www.insideline.com/auto-shows/frankfurt/2009/