Spanish Grand Prix

Car number 6 a McLaren M23 driven by Peter Revson, car number 18 a Brabham BT42 driven by Carlos Reutemann, car number 7 a Ferrari 312B3 driven by Jacky Ickx, car number 14 a BRM P160E driven by Clay Regazzoni, car number 20 a Shadow DN1 driven by George Follmer, car number 19 a Shadow DN1 driven by Jackie Oliver