A fastback is an automotive styling feature, defined by the rear of the car having a single slope from the roof to the tail.
1935 Stout Scarab
1949 Cadillac Series 62 rear
1950s Warszawa M20
1956 Porsche 356A
The Ford Mustang is a series of American automobiles manufactured by Ford. In continuous production since 1964, the Mustang is currently the longest-produced Ford car nameplate. Currently in its seventh generation, it is the fifth-best selling Ford car nameplate. The namesake of the "pony car" automobile segment, the Mustang was developed as a highly styled line of sporty coupes and convertibles derived from existing model lines, initially distinguished by "long hood, short deck" proportions.
2018 Ford Mustang GT 5.0
A 1969 Ford Mustang Mach I and a P-51 Mustang
"1964½" Mustang convertible serial No. 1, sold to Stanley Tucker who was given the one millionth Mustang in exchange for his historic car
1965 "fastback", introduced in September 1964 for the 1965 model year