Sergio Pininfarina and fellow Pininfarina executive and brother-in-law Renzo Carli near the Pininfarina wind tunnel under construction in 1971. Sergio always made sure to speak about Carli’s key role in running the company. (Pininfarina archive photo)

Sergio Pininfarina and fellow Pininfarina executive and brother-in-law Renzo Carli near the Pininfarina wind tunnel under construction in 1971. Sergio always made sure to speak about Carli's key role in running the company. (Pininfarina archive photo)