During friday practice session of the 1988 F1 German GP, Williams team drivers Nigel Mansell and Riccardo Patrese try ultra low rear wing on their FW12. This wing was not kept for friday qualifying session nor for the rest of the weekend. On July 17, 1997, Williams again tested an ultra low rear wing during a test session at Monza with Jacques Villeneuve. To see it:
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