Not longer after Bizzarrini left Iso, Rivolta came back to him. This time, Rivolta wanted him to build a mass-produced luxury car. But Bizzarrini at that time had a full-blown racing machine in mind. But Rivolta was insistent and so Bizzarrini worked with Rivolta’s engineers supervised by chief engineer Bertone to build the A3/L model while working on his own ideas separately which resulted in the A3/C model. The A3/L, named the Iso Grifo, was a huge hit in the Turin Auto Show in October 1963. The A3/C was not far behind in tasting success, as it won the prestigious Le Mans 24 Hour race in its class. After this, following a dispute with Rivolta, Bizzarrini decided to walk. Rivolta retained the rights to the ‘Grifo’ name but Bizzarrini walked out with the rights to the A3C. Bizzarrini went on to build 2 more successful prototypes from his Livorno-based company based on the A3C – the 5300 GT Strada, a mass-produced car and the 5300 GT Corsa, a racing machine.

After 1969, Bizzarrini moved on to work for Opel and GM among other major manufacturers. His restored Strada 5300 was featured in the Pebble Beach Concours Parade of Elegance in California and was admired universally.

The Strada combined driveability with high speeds and performance and was acclaimed to be ‘among the fastest grand touring cars in the world’. Inspite of working with many successful designs, very few of Bizzarrini cars were mass-produced more of them being one-off, made-to-order jobs. Even today, car aficionados hold his designs dear to their hearts and his restored cars are a huge hit in every show that they are staged in.