I rented this game yesterday and am finding that it is as difficult as I've heard it is. I just wanted to know when you unlock the series 3 class or whatever its called. Because I have 4 cars total, and I just rezlied they all suck, so I looked to buy a new one and the only good one that i can afford is in the 3rd class and I only have the 2nd class unlocked. How do you unlock cars/classes? I have been doing races and events and nothing is unlocking. I just want to know how so I'm not wasting time with something that isnt helping.