Kazunori Yamauchi on Gran Turismo for PSP

While at the Tokyo Game Show, Joystiq was able to interview Kazunori Yamauchi of Polyphony Digital. Among other things, they talked about the status of Gran Turismo on PSP ("this is still in the works") and the game's PSP/PS3 interactivity:

one example would be for people to utilize replays of their race experience. Take that outside the home, whereas at home you would need the PS3, but they can take that away and share. Another would be – and we would need to do further research, we're just talking ideals here – but it would be nice if we were able to allow people to compete whether they're on the road or in their living room on the PS3, compete in the same race

For more on upcoming Gran Turismo news read the interview at Joystiq.