Incase the new GT6 PS3 massive updates annoy you, they allow a data logger to be installed into 86/BRZ/FR-S's and your real world track sessions to be replayed on your PS3. You can also race against yourself, in your virtual car, against your real car.
The downside, currently only available in Japan for Japanese tracks, and uber expensive. If it begins featuring Aussie tracks...oh lordy, I'm getting one!