Giotto Bizzarrini made his name by having total responsibility for the development of the legendary Ferrari GTO. Most sources suggest that the name derives from "Gran Turismo Omologato", but there is a nice suspicion that it was a shortened version of his own Christian name (Giotto compressed to Gto).
After leaving Ferrari he was head-hunted by Renzo Rivolta, an Italian industrialist , keen to expand his interests into the luxury car market.
The first car to be announced, under the Iso Rivolta label, appeared at the Turin show in 1963, named Grifo. Two versions were offered, the A3L (Lusso) road car, and the A3C (Competizione) race car.
Due to Rivolta's lack of interest in racing, Bizzarrini had to mount the LM effort himself, the one car, as seen here, came home in 14th place, driven by Berney and Noblet, at 106.67 mph.