Giugiaro has released another teaser image of its forthcoming Geneva concept car. So far nameless, commenter Mark Miller has made an educated guess that it'll be called Quaranta - Italian for forty. 2008 is ItalDesign's 40th birthday. We also predict some sort of hypothetical green power plant, you know the kind that is supposedly capable of saving the world, but is really just some hot air stored under a heavily tinted engine cover. All the speculation will end on March 4th, when the vehicle is officially revealed at the Geneva Motor Show. [Via Giugiaro]