As much as we love Polyphony's work, the company takes its sweet time. Gran Turismo PSP was officially announced in May 2004 but didn't see a release until October 2009. Although it was a commercial success, critics and fans were displeased at the lack of a career mode and car upgrades.
The fact that it took five years to bring this game to stores was a reminder of the lengths Sony and Polyphony will go when it comes to Gran Turismo, leaving us to wonder how long it'll take to produce a new entry for PlayStation Vita.