I've just spent about the last 4 hours on Gotham 3 earning cash and buying all the cars in the game. I am at rank 1 so all of the previously locked concept cars are open. I've bought all 80 cars in the game and have all of the garages (right up to Tokyo Two). Why the hell haven't I been awarded the 'All Cars' badge in the achievements menu? (Its description is something like 'Feeling flush? Buy all the cars in the game'). It's really bugging me because I've checked and double checked and I do indeed own all of the cars! Please can anyone help?!