Being new to the Forza series [as well as XBOX in general], when I saw the trailer for this game during E3, I hadn't even played the Forza series. When, a month later, I had an XBOX360 and Forza 4 in my hands, I loved the cars and the tracks and all to do with the game.
Now Forza Horizon, and these cars are looking good. I especially like the inclusion of the Nissan Skyline's, as they are what I mainly use. I use other vehicles when necessary, but when I don't have to, the Skyline's are what I use.
I just hope that Mini's are in this one, as those are a close second.