In 2002, TST began work on a conceptual passenger car, with a modification of the body - a 2-seater roadster with a convertible system (retractable roof). The car has a non-standard body layout (engine location - in the rear of the car). A fundamentally important task in the design of the car was to find a new technique for storing a rigid roof (compact). The car has a plastic body seated on a rigid, profile frame. The company "TST" designed and manufactured the body of the car. Over time, the project has undergone changes in body plastic and the structural console of the frame. The main issue of the decision of the body was the finding of plastic of the roof and windshield to the shape of the entire car (task: to reduce the height dimensions as much as possible), without negatively affecting the ergonomics of the cabin. The task of further work was to design the interior and refine the appearance of the car body.