Spanish Grand Prix
The first Spanish Grand Prix in 1913 was not actually run to the Grand Prix formula of the day, but to touring car rules, taking place on a 300-kilometre road circuit at Guadarrama, near Madrid, on the road to Valladolid.
1974 Spanish Grand Prix
The Spanish Grand Prix marked the debuts of the Trojan and Amon teams, as well as Liechtensteiner driver Rikky von Opel. Jorge de Bagration, a local driver of Georgian royal descent, was to have taken part in the race, driving a Surtees TS16 with sponsorship from department store El Corte Inglés, but missed out due to a very unusual set of circumstances: the outgoing president of the Spanish Motor Sport Federation cleared his office, taking with him all paper files including the official entry list for the race; a replacement list was hurriedly drawn up that omitted de Bagration, whose sponsorship had just fallen through. Despite this, de Bagration should still have been included on the replacement list, regardless whether or not he would have been able to race.