It refers to a certain design of a car that has an unbroken curved line from the top of the roof to the rear bumper. The rear window slope follows the unbroken roofline and often remains at less than a 45-degree angle.
A car that has an unbroken curved line from the top of the roof to the rear bumper as opposed to a drop in the line for a near-vertical rear window. In a fastback design the rear window slope follows the unbroken roof line and is often at less than a 45 degree angle.
A. Car with sloping back glass. B. Where Front Row Joe goes, and how he gets there, as soon as the green flag flys.
A roofline that slopes directly down toward or to the rear bumper of a vehicle.
Passenger car body with the roof sloping in a near continuous curve from the windscreen to the rear.
A fastback is a car body style characterised by a continuous slope from the roof to the base of the decklid. Fastbacks can be two-door coupés or two- or four-door sedans. Unlike the hatchback, a fastback car has a fixed rear window and a trunk that is separated by a bulkhead from the passenger cabin (it should be noted that no such distinction is made in the UK, and hence the body style this article discusses is also a hatchback).
Fastback (real name Timmy Joe Terrapin) is a fictional character in the DC Comics universe, an anthropomorphic turtle. Fastback is a superhero who lives on the otherdimensional world of Earth-C, an alternate Earth populated by sentient animals. His first appearance was in The New Teen Titans #16 (February 1982).