The Adams-Farwell five cylinder rotary engine. I just love seeing people who think outside the box build something so different from conventional thinking. [flash]http://www.youtube.com/v/Y0XbqHUAI-0?version=3[/flash]
OK Clarification, it's a radial engine that rotates. Here is the Motorcycle version a Megola with front wheel drive. [flash]http://www.youtube.com/v/ZghXM9xqCPA?version=3[/flash]