[3] At least two major Italian Carrozzeria showed designs for the Corvair using cars believed to have been supplied directly from GM.

The Vehicle Identification Number (VIN) attributed to the finished concept - 20927W207657 - indicates that it started out as a 1962 Corvair 900 (Monza) coupe built in the Willow Run plant.

It finally underwent a complete restoration in the early 1990s under the direction of Luciano d'Ambrosio, Bertone's new chief designer.

The Testudo influenced later Bertone designs like the Lamborghini Miura, Alfa Romeo Montreal, and Fiat 850 Spider.

[5] Designer Dick Teague drew inspiration from the Testudo when shaping the 1975 AMC Pacer.

[3] Giugiaro revisited the tilting canopy concept in 2018 for the design of the GFG Sibylla.

On 21 May 2011 RM Sotheby's offered the Testudo for sale at the Villa d'Este at Lake Como.

[3] The rear suspension was a swing axle system made up of semi-trailing arms with coil springs and hydraulic shock absorbers mounted to a rear subframe, with drive taken from the transaxle to the wheel hubs through half-shafts that had a universal joint on their inboard ends and a rigid connection at the outboard ends.

The bodywork was executed in 0.031 in (0.8 mm) thick steel, with the hood and some other panels of aluminum.

The interior of the car was accessed through a single, front-hinged canopy with a windscreen of safety glass.

[2] Air intakes for the engine compartment were located on the sides just behind the canopy in what would normally be the leading edges of the B-pillar, a feature that would also be used later on the Miura.

[3] The exposed headlamps rotated up and forward to a vertical position when needed and then folded back flush with the bodywork when not in use, another feature that would appear on the Miura.