What do you think is the most beautiful F1 car of all time?

Gurney is pictured looking over the Mk1 in the pits at the 1966 Mexican Grand Prix. The Lotus 49 was introduced in 1967, the final year in which the team competed in British racing green with a yellow stripe at the front. Tobacco sponsorship arrived in 1968 via Gold Leaf and the Lotus became red, white and gold.

The 49 was designed by Colin Chapman and Maurice Philippe and was the first F1 car to be powered by a Ford-Cosworth DFV engine. It won on its debut at the 1967 Dutch Grand Prix through Scotsman Jim Clark and though reliability issues meant it could not win the championship that year, Englishman Graham Hill took the title in 1968 after Clark's death in a F2 accident. By 1978, Lotus were racing in livery that also would become iconic - their black and gold which was used, on and off, until 1986.

For the car itself, the Lotus 79, designer Colin Chapman perfected 'ground effect', where air flowing under the car was channelled to create hitherto unheard of levels of aerodynamic downforce. The design speeded up airflow to create a low-pressure area that sucked the car down on to the track. Vertically sliding 'skirts' were used to prevent any air escaping out of the sides.

The car dominated the 1978 season, with eventual world champion American Mario Andretti saying it cornered "like it was painted to the road". The Brabham BT46, designed by Gordon Murray, was eclipsed by the dominant Lotus 79s in 1978 but did manage to win two races through Niki Lauda, in Sweden and Italy. In the first of these, the Brabham ran with a giant fan at the rear.