Autódromo Internacional Nelson Piquet (Brasília) Autódromo Internacional Nelson Piquet (Brasília) Autódromo Internacional Nelson Piquet is a racing circuit in Brasília, the capital of Brazil. It is 5.476 km in length and hosts a variety of national-level series including Stock Car Brasil, Formula Truck and Formula 3 Brasil. It has previously hosted non-championship rounds for both Formula One and the BPR Global GT Series, and in recent years has been scheduled to host both MotoGP and IndyCar, but due to costs and construction delays, neither event went ahead. Previously named Autódromo Emilio Medici and Autódromo de Brasília, the circuit's name was later changed to honor Formula
David Walker (racing driver) David Walker (racing driver) David Walker (born 10 June 1941 in Sydney) is an Australian former racing driver who drove for Lotus in the 1971 and 1972 Formula One World Championships. Walker had some international racing experience early in his career in the Australian rounds of the Tasman series in 1964-65 on challenging tracks like Longford and Sandown at a time when most Australian National 2.5 drives were near world class and he also drove a Lotus 70 in the 1971 Australian rounds. During the 1960s Walker's racing career faltered (he was the 1969 British Formula Ford Champion and finished