Giugiaro has something up its sleeve for the 2009 Geneva Motor Show and they are calling it the "fastest hybrid in the world." Italdesign Giugiaro says that its unnamed concept car will run from 0 to 62 mph in just 4 seconds with a top speed of 186 mph. The Italdesign-Giugiaro fastest hybrid in the world will return an outstanding 124 mpg.