sentences:  In April 2008, Yamauchi stated that developing "Gran Turismo 5" on the PlayStation 3 "took much more time and effort and this was because loads of new stylish cars have started to come out so it took longer to develop than we had first imagined", and that it was unlikely the PSP version would be released by the end of 2008.A version of "Gran Turismo" for the PSP was shown during Sony's E3 2009 keynote on June 2, 2009.Called simply "Gran Turismo", its October 1, 2009 release date coincides with the launch of the PSP Go, which was announced at the same conference.