It is a licensing thing. Some licenses are paid up and in the game, Bathurst from memory.. I also think there are some paid up that are going to be laser scanned.. Brands Hatch i think.
At the moment the money for development is probably being used on programming rather than licensing.. As long as the game gets completed I reckon the last thing they will do is complete the licensing deals. I don't think it's too complex a matter, just a matter of making the best available use of current coinage.
Xbox Gamertag: Myrig
PSN ID: Meurig
Steam ID: Meurig
iRacing name: Marcus Meyrick