Porsche AG announced on 7 May 2007 that the 911 Turbo Cabriolet would go on sale in September 2007. The Porsche 997 Turbo Cabriolet became one of the fastest convertible sports cars in production. It is capable of similar top speeds and acceleration to the standard Porsche 997 turbo coupé, a notable feat due to the typical problems associated with convertible variants of hardtop coupés, such as the poor aerodynamics of a soft top, a lack of torsional rigidity, and the consequential weight increase from structural members.