Convertible vehicle

The rear bulkhead (50) includes a guide (60) capable of holding sheet material used as a rear wind deflector in a plane (F) intersecting the side bars (32, 34). In this way the opening (40) is closed, preventing slipstream flow through it. The sheet material (52) is brought into the active position from its stowage position within the vehicle bodywork (10) by the guide (60); the operation being reversed for storage.