F1 wizard Gordon Murray reinterpreted the 2J's innovation for one race in the 1978 season with the Brabham BT46B. A huge fan driven off the gearbox sucked the car to the ground and allowed drivers to corner at virtually any speed they wanted. Niki Lauda handily won the Swedish Grand Prix, the BT46B's first race, but Lotus and other teams threw a fit, ending the short reign of the vacuum car in Formula 1.
Another amazing innovation from an acquaintance of mine, Gordon Murray. Met him at 89 German GP while visiting McClaren pits. Brabham Fan Car - Fan sucked air out from underneath car to create added downforce.