Ralph Nader's 1965 book "Unsafe at Any Speed", is known for its critique of which vehicle?

Ralph Nader's 1965 book "Unsafe at any Speed", is known for its critique of the car known as the Chevrolet Corvair. This car was a compact car manufactured by Chevrolet for model years 1960–1969 in two generations. A response to the Volkswagen Beetle, it was the only American-designed, mass-produced passenger car with a rear-mounted, air-cooled engine. The Corvair was manufactured and marketed in 4-door sedan, 2-door coupe, convertible, 4-door station wagon, passenger van, commercial van, and pickup truck body styles in its first generation (1960–1964). It was produced as a 2-door coupe, convertible or 4-door hardtop in its second (1965–1969). It had a total production of approximately 1.8 million from 1960 until 1969.

The name "Corvair" originated as a portmanteau of Corvette and Bel Air, a name first applied in 1954 to a Corvette-based concept with a hardtop fastback-styled roof, part of the Motorama traveling exhibition. When applied to the production models, the "air" part referenced the engine's cooling system.

A prominent aspect of this car's legacy derives from the controversy surrounding its handling, brought to light by Ralph Nader's non-fiction book "Unsafe at Any Speed", which was tempered by a 1972 Texas A&M University safety commission report for the National Highway Traffic Safety Administration which found that the 1960–1963 Corvair possessed no greater potential for loss of control in extreme situations than its contemporaries.