cooling the inboard brakes during a pit stop on the Lotus 72

Found on http://flaviogomes.warmup.com.br/2012/09/enigma-do-dia-50/#comments , where if Google will translate for you, you can read about it , or here http://autoentusiastas.blogspot.com.br/2009_06_01_archive.html