PSP games are notorious for going easy on gameplay footage during trailers. Ditto for the Gran Turismo series. So it's nice seeing Digital Foundry put together their own Gran Turismo PSP clip, which features nothing but real gameplay.
And as you can see, film grain or not, when you see it in motion this looks fantastic for a PSP game.
Gran Turismo PSP shines in 60FPS video [Digital Foundry @ Eurogamer]