 The word Otto appears, in various forms, three times in the car's name.Back in 1921, Ugo Zagato designed a lightweight and aerodynamic body for the Diatto 25 4DS chassis.Created in 1835 with a Perfected Wheel patent, Diatto made their first car in 1905 and often crossed paths with Zagato in their close collaboration with Ettore Bugatti, the Maserati brothers and Tazio Nuvolari.