In 1962, the engineer Giotto Bizzarrini was hired by Count Giovanni Volpi, owner of the SSS Scuderia Serenissima Republica di Venezia, to uprate a Ferrari 250 GT SWB to GTO Specs. Ferrari was upset with Volpi and had refused "on personal grounds" to sell him a GTO.
Bizzarrini applied all the ideas from the GTO and together with the car body specialistPiero Drogo developed an aerodynamically advanced body, even lower than GTO, with the roof line dramatically extended to the rear end following Kamm aerodynamic theory. The resulting boxy shooting brake appearance prompted the moniker "Breadvan".Bizzarrini moved the engine further back to the center of the chassis than the GTO, and lowered it by fitting a dry sump system.
The car was completed in 14 days. Several other 250 GT SWB cars were developed by Bizzarrini, Drogo, Neri and Bonacini, some to GTO spec, and distinctive bodied with similar shapes. The car was reported to be 7 km/h faster than GTO at Le Hunaudières straight at Le Mans.