Search fails, but I saw an old black-and-white picture of a Porsche race car that had the engine cooling driven by the exhaust through a plenum behind each rear wheel. Would that be Venturi effect?
OTOH I did find this picture of the Emory's Darth Vader Porsche:
I wish they were still in Eola Village at Amity, OR. Good times.
https://www.pca.org/sites/default/fi...Sweetman-5.jpg