One of greatest contributions to racing is surely the development of aerodynamics. Certain race cars tended to evolve from model to model, with a single chassis being used as the basis for a number of models over a number of race seasons. The Type 2E was one of those.
Though the first 2E was built using the aluminum semi-monocoque 2C chassis, it represents the single most significant evolutionary advancement. Other cars in would have even more radical departures from the machines that came before them, but the 2E was the one that really started the search for big downforce.
Behind the 2E is the knowledge gained from countless hours of racing the 2C, testing at Rattlesnake Raceway, and evaluating the results of every minute change that the ingenious inventor could come up with. The 2E embodied design principals that are taken for granted today, such as the realization that reduced airflow under the car reduces drag, and that downforce must be balanced front-to-rear.
The Type 2E "Works Prototype" represents the determination to take on the fastest competitors by turning the playing field upside down. It's not possible to list all the innovations found in the 2E here, but suffice it to say that 1966 was a banner year for motorsport with no small thanks to these revolutionary white racers!