The Edsel was an automobile built on Earth by the Ford Motor Company and described as one of the worst marketing failures in history.
Prior to World War III, Elrene Leydon's great-grandfather and grandfather owned an Edsel before an ECON weapon destroyed the car.
In 2155, Hoshi Sato compared the Enterprise to an Edsel because of Nathan Samuels's decision to end production of the NX-class. (ENT novel: Beneath the Raptor's Wing)