Gran Turismo 5 (also known as GT5) is the fifth edition of Sony/Polyphony Digital's racing video game series, Gran Turismo. Expanding on the Prologue version, which was first released in Japan in October 2007 and intended to give an impression of the final game, it will be the first of the main numbered series to feature on the PlayStation 3.
As found in the Prologue, and for the first time in the numbered Gran Turismo series, the game is set to feature cars from Ferrari, including the Ferrari F2007 Formula One World Championship car. In addition to Prologue features, it also includes the Top Gear Test Track featured in the BBC motoring show, and will greatly expand on the number of cars available, to over 900. As well as Ferraris there are also other super cars featured such as the Audi R8 and Ford GT because they have featured in Gran Turismo 5 Prologue, and therefore will be found in GT5. (Just like Gran Turismo 4 Prologue and Gran Turismo 4 on the PlayStation 2). There is also a 16 player online mode as in GT5 Prologue.
an extended description!