New Moto Guzzi Door Mats Available Now
The story about Moto Guzzi working with Fiat to put the motorcycle v-twin into a Fiat car is a myth. Greg Field quotes Guzzi engineers and shows photos of the actual Fiat prototype --a different engine altogether -- to disprove it. (In his book, Guzzi Big Twins.)
Here is a 2011 interview of Enrico Cantoni in which he explains his role in developing a Guzzi engine for the Fiat Cinquecento. If I recall correctly, Giulio Carcano's personal Fiat had the engine installed. Everything I've read indicates it was a late '50s project that Guzzi initiated and tried to sell to Fiat unsuccessfully, not a joint venture, and the Vee twin motorcycle engine came later.https://rideapart.com/articles/the-man-who-made-the-moto-guzzi-v8