The Chaparral 2J, also known as the sucker car, was a unique and innovative race car that made its debut in the 1970 Can-Am season. The car was designed by Jim Hall, the owner of the Chaparral Cars team, and it featured a radical aerodynamic design that included two fans mounted at the rear of the car that sucked air from underneath the car, creating downforce.The fans were powered by a two-stroke engine and were the first of their kind in motorsports. They allowed the car to generate up to 2,000 pounds of downforce, which gave it tremendous grip and stability through corners. The fans also had the added benefit of cooling the car's brakes, which reduced brake fade and allowed for more consistent braking performance.The Chaparral 2J was powered by a Chevrolet V8 engine that produced over 700 horsepower, which was a significant amount of power for a car of its time. The car was also very lightweight, weighing in at just over 1,500 pounds, which gave it a tremendous power-to-weight ratio.The 2J's unique design proved to be very effective on the race track, and it won its first race at the 1970 Road America 500. It also set several lap records and finished on the podium in several other races that season. However, the car was controversial, and many of the other teams in the Can-Am series protested it, claiming that the fans were a form of ground effect and therefore violated the rules. The protests were eventually upheld, and the car was banned from competition after just one season.Despite its short-lived racing career, the Chaparral 2J remains one of the most innovative and interesting race cars of all time. Its unique design and technology paved the way for future advancements in aerodynamics and downforce generation, and it remains a fan favorite among motorsports enthusiasts.