1975 Spanish Grand Prix
It was the 21st Spanish Grand Prix since the race was first held in 1913. It was the fourth, and last, Grand Prix to be held on the Montjuïc street circuit. The race was shortened to 29 of its scheduled 75 laps, a race distance of 109 kilometres. The race was won by German driver Jochen Mass driving a McLaren M23. It would be the only Formula One win of his career. Mass had just a second lead over the Lotus 72E of Belgian driver Jacky Ickx when the race was declared. Argentine racer Carlos Reutemann was declared third in his Brabham BT44B, a lap behind the race leaders after a penalty was given to Jean-Pierre Jarier. This was the final win by a German driver until Michael Schumacher won the 1992 Belgian Grand Prix.
Mexican Grand Prix
The Mexican Grand Prix was first held on 4 November 1962 at the Magdalena Mixhuca circuit. The circuit was the first international racetrack in Mexico and was built within a park in the center part of capital city of Mexico City. The race provided unique challenges for racing, standing at 2,240 (7,340 ft) above sea level, as well as the long, 180-degree, lightly banked and fast Peraltada corner that finishes the lap, in addition to being a bumpy racetrack from actively shifting soils beneath the circuit. The Mexican Grand Prix of this period was always the season finale Grand Prix, held in late October.