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...rs. This has been the successor to the earlier dominant aerodynamic theory of streamlining. [[Champ Cars]] employed ground effect to some extent, but [[F ...cars to increase downforce, but this is ''not'' ground effect.) This kind of ground effect is easily illustrated by taking a [[tarpaulin]] out on a wind

...were held for many years. Due to the rising cost of competition, the last of these occurred in 1983. National championships existed in [[South Africa]] ...6]] by the Commission Sportive Internationale (CSI) of the FIA, forerunner of FISA, as the premier single seater racing category in worldwide motorsport.