The Chevrolet Corvair Monza GT (XP-777) was a mid-engined experimental prototype automobile built in 1962 and based on the early model Chevrolet Corvair series. As it was essentially a concept car, the Monza GT did not enter production.

The Chevrolet Testudo is a concept car built by Bertone on a modified Chevrolet Corvair Monza platform. The name comes from the Latin word for "Turtle". The car debuted at the 1963 Geneva Motor Show.