 Complete the following phrase:  Of the 12 works racers on Ferrari 512 S in 1970, nine are still alive. Ignazio Giunti was killed in Buenos Aires in January 1971, driving the brand new Ferrari 312PB. He was leading the 1971 1000 km Buenos Aires race when he collided with the Matra which Jean-Pierre Beltoise was attempting to push back to the pits after running out of fuel. Giunti sustained injuries from which he would not survive. Ronnie Peterson, who started his F1 career in 1971, died from injuries that occurred during the 