The Bertone Shake was built on a SIMCA 1200 S chassis, the same one used for the coupé created by the Turin designer for the French manufacturer. Bertone's attention had been captured by the "dune buggy" idea, and he decided to try his hand at this type of vehicle, albeit on a different level from the typical "home-made" car. A prototype like this was conditioned by the need to guarantee safety in all driving conditions, due to the fact that the car would often be used off-road, and the SIMCA 1200 S chassis was therefore adapted to include some stylistic elements used in a previous design (the 1969 Runabout). The Turin designer also devoted the same level attention that had gone into the preparation and adaptation of the structure of the car to cope with difficult conditions, to the finishing touches. The Bertone Shake was presented at the 1970 Paris Motor Show to widespread acclaim, above all among the younger visitors.

source: Bertone