23. Peugeot 908 RC
Debut: Frankfurt Motor Show
Complex Says: We're not sure how a luxurious four-door sedan, on par with the S-Class and 7-Series, which happened to be one of the best designs to come from the French automaker, didn't get made. Guess we're supposed to find solace in the fact that a lot of what it learned building the 908 went into the not-so-cool 508. Eh.