Claim: The Selex Competition produced cars for multiple racing events such as the Formula 4 (a fourth-tier class of open-wheel formula racing) in 1965 and 1966 with Selex ST 1 and Artes Cheetah, respectively, as well as in the Grand Tourer of 1967 with Artes Campeador.
Evidence: Artes Cheetah Selex ST 1 1965 Formula 4 1966 Formula 4 Formula 3 Formula Libre Artes Campeador Grand Tourer 1967 FIA Formula 4, also called FIA F4, is an open-wheel racing car category intended for junior drivers.