The Edsel was introduced amidst considerable publicity on "E Day" - September 4, 1957. It was promoted by a top-rated television special, The Edsel Show on October 13, but it was not enough to counter the adverse public reaction to the car's styling and conventional build. For months Ford had been circulating rumours that led consumers to expect an entirely new kind of car when in reality the Edsel shared its bodywork with other Ford models.
For the 1958 model year, Edsel produced four models, including the larger Mercury-based Citation and Corsair, and the smaller Ford-based Pacer and Ranger. These included several innovative features, among which were its "rolling dome" speedometer and its Teletouch transmission shifting system in the center of the steering wheel.
For the 1959 model year, there were only two Edsel models, the Ranger and the Corsair and only 47,396 were sold in the U.S. and Canada.
There is no single reason why the Edsel failed, and failed so spectacularly. Popular culture often faults the car’s styling. Marketing experts hold the Edsel up as a supreme example of corporate America’s failure to understand the nature of the American consumer. But most will agree that the main reason the Edsel's failure is so famous was that it flopped despite Ford’s investment of $400,000,000 in its development.
For the 1960 model year, Edsel's last, only the Ranger and Villager were produced. The 1960 Edsel, in its final model year, emerged as a Ford. Its grill, hood, and four taillights, along with its side sweep spears, were the only real differences separating the Edsel from the Ford.
Link: Lots of cool information about the Edsel on Wikipedia.