GT5 Prologue already has decent AI compared to other games. Here take a look at this vid.
You will notice how the AI on the main straight doesnt stay in a single line and tries to out brake each other into turn 1. Though the only down side is the AI still isnt aware of the player at times. If you have played GT PSP you will notice this has been fixed as the AI in the PSP version notices where the player is and gives the player room while still trying to hold its racing line without pushing you off the track.
Now from the old CES2010 footage below you can see how the AI is improved in this video of GT5. The Toyota Supra avoids the player who starts driving the wrong way and attempts to do a head on with the Toyota Supra.
Skip to 2:20 in the vid to see what im talking about.
And if you watch this you will notice the AI fights to hold its position. While it still does cause body contact with the player the AI is alot more aggressive then previous GT games.
I hope that ends the bad AI single line nitpicking people keep going on about. You can see from these OLD BUILD videos that PD are listening to its fans and improving the AI.
