In theory, what I have already mentioned should cover the co-op aspects of the game; brilliantly customisable, but perhaps only as co-operative as two player choose it to be. However, since the game released on 22nd September there have been numerous bugs that have plagued the co-op aspects of the game. To quote myself:
1. A great feature of the co-op championship is that you can save your progress and return as a duo at a later date. However, once you reload your save it will always set the AI to the lowest level, no matter what difficulty you are playing. This means you could set the game at a 'professional' level, but the AI acts like it is a beginner. This bug sometimes appears intermittently between qualifying and race days.
2. Your finishing position is not always guaranteed. "Congratulations, you came 1st." However, there is a bug that can place you anywhere in the final standings as the game struggles to compute some overtaking. "Congratulations, you actually came 14th."
3. You can ruin your tyres in qualifying, only to start the race on new tyres. A small issue, but on a game that can be set up as simulation style racing, this will annoy the hard-core players.
These three elements join together to undermine all the best elements of the single player experience so that the co-op is essentially broken. Any players wanting to play the game in simulation will be totally undermined by the broken AI and tyres issues. Even those gamers who just want to play on easy and romp to victory will become unstuck by the bug that often places you further down the field than you should be – as I said, broken.