I got all the cars (excluding DLC) in Horzion since I just bought the 250 a couple of days ago would have gotten it sooner if I would have been lucky and won it when I got to level 50 online I also have half of the unicorn cars. In FM4 I still have less then half of the cars but I do have most of the Ferraris due to the Ferrari Collector achievement without it I would have been in less of a rush to buy most of them.