The Chevrolet Corvette C3 is a sports car patterned after Chevrolet's "Mako Shark" (designed by Larry Shinoda), produced between 1968 and 1982. It is the third generation of Chevrolet Corvettes built and marketed by Chevrolet.
This generation has the distinction of being introduced to the motoring public in an unorthodox — and unintended — fashion. 1968 marked the introduction of Mattel's now-famous Hot Wheels line of 1/64-scale die cast toy cars. General Motors had tried their best to keep the appearance of the upcoming car a secret, but the release of the Hot Wheels line several weeks before the Corvette's unveiling had a certain version of particular interest to Corvette fans: the "Custom Corvette", a GM-authorized model of the 1968 Corvette.
Styling changed subtly over the generation. In 1973, the Corvette dropped the front chrome bumpers for a urethane-compound "5 mph" bumper but kept the rear chrome bumpers. In 1974, The rear chrome bumpers became urethane, too, making 1973 the last Corvette model year with any chrome bumpers. 1975 was the last year for the convertible, and 1978 saw the introduction of a glass bubble rear window. In 1980, the Corvette got an integrated aerodynamic redesign that resulted in a significant reduction in drag.
Source: Wikipedia (original)