I'm not buying it either. Well I think it's fine, but I didn't fall in love with it. The handling, the force feedback, and how the handling changes when the car is damaged is nice I think. And I like that they've made the mirrors so you can see your own car in it, but it's badly done, side mirrors are pretty useless, the center mirror feels realistic, but definitely not the greatest mirror I've seen in a car + the look back button doesn't work as you can only see the back of your cockpit nothing else. The car has a nice sound, however wheel seems to be a bit too large + cockpit in general is a bit claustrophobic (might be realistic, don't know, but I don't really like it). The detail of the tracks is very nice. Other than that it really feels like rFactor, but in this I have huge FPS drops when I stand still, don't know why. (so if I leave the tarmac and have to stop to avoid barriers or to turn back, it can cause a problem)
That's it. From the previews I thought more tbh. It's a good game, but not really as different as they said imo.