With the Stratos Zero, presented at the 1970 Turin Motor Show, Bertone passed the limits of automotive styling and conceived a shape that appeared as though it were made of a solid block of metal, evoking speed and the sensation of travel. The Zero was not only a design statement but a fully functioning prototype. There was a style continuity between the 1968 Carabo, the 1970 Stratos and the 1971 Countach prototype. The three projects showed a clear progression in lines research. The car was officially labelled the “Stratos HF”, even though Nuccio Bertone initially wanted to call it “Stratolimite”.