Information: - Gran Turismo Concept ( Guran Tsrisumo Konseputo ) is a racing video game of the Gran Turismo series for PlayStation 2 which is developed by Polyphony Digital . It is essentially a short version of Gran Turismo 3 : A-Spec , but with concept cars that ended up in Gran Turismo 4 . It was released in 2002 in Japan , Southeast Asia , Korea , and Europe . For undisclosed reasons , the game was not released in the North American market , although a stripped - down version of it was released in form of Gran Turismo : Nissan 350Z Edition . This short version title followed the release of the full - length version Gran Turismo 3 : A-Spec in 2001 and was eventually followed by Gran Turismo 4 . - Polyphony Digital is an internal video game development studio of Sony Interactive Entertainment, part of Sony Interactive Entertainment Worldwide Studios. Originally a development group within Sony Computer Entertainment known as Polys Entertainment, after the success of "Gran Turismo" in Japan, they were granted greater autonomy and their name changed to Polyphony Digital. - Originally slated for a 2003 release, "GT4" was delayed for over a year and a half by Polyphony Digital, and had its online mode removed (later added in "Gran Turismo" online test version). Gran Turismo has held the title of being the number one seller and highest production Polyphony Digital has ever seen. The game features over 700 cars from 80 manufacturers, from as early as the 1886 Daimler Motor Carriage, and as far into the future as concepts for 2022. The game also features 51 tracks, many of which are new or modified versions of old "Gran Turismo" favorites, with some notable real-world additions. What is the relationship between 'gran turismo concept' and 'sony computer entertainment'?
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