Well I never knew Ducati had such a machine prototyped in 1964. The lack of suitable tyres seems to have stopped the project but what might have been? Launching such a large capacity V4 in the 60's would have changed biking history. https://en.wikipedia.org/wiki/Ducati_Apollo Roadtest here: https://riders.drivemag.com/features/ducati-v4-apollo-1260-road-test-riding-ducati-s-dinosaur
