To steal a line from Frankenstein: It's alive!!! Infiniti has finally released a working prototype of the acclaimed Q50 Eau Rouge Concept. First revealed at the Detroit Auto Show earlier this year, the Eau Rouge was an immediate hit, though it was introduced sans engine at the time. A few months later, it gained even more buzz when Infiniti showcased it at the Geneva Motor Show, where it showed off a street-lethal twin-turbo engine, which is shared with the GT-R. Now, a working prototype of the sedan has been revealed and we've got details!