Giotto Bizzarrini, one of the world's most talented automotive engineers, was instrumental in the development of the immortal Ferrari 250 GTO, the pioneering mid-engined ATS 2500 GT, the Ferrari 250 "Breadvan", the legendary Lamborghini V12 engine and also the ISO Grifo, from which the Bizzarrini 5300 GT and Bizzarrini A3/C models were developed.