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4 Elford drove the remarkable Chaparral 2J "sucker car" in two races in 1970. Its innovative design featured an enclosed body with movable Lexan skirts that formed a vacuum under the car. Two rear-mounted snow-blower engines literally pulled it to the ground. Elford reported that the faster he went, the more grip the car had. It was banned at the end of the 1970 season.