Before I answer Joe, let me state that I've created a car club. The code for the club is SOP1.
That's a good question, Joe. For me, Forza 4 scratches a driving itch I've had for a long time. It's challenging, but only as challenging as I make it for myself. I feel like my collection of cars MEANS something, rather than one ridiculously overpowered car after another like Hot Pursuit.
For instance, I played Hot Pursuit and had fun with it, but I can't recall ONE of the cars I drove in that game.
In Forza, I'm feeling a connection with cars immediately. My bright red 69 Fairlady, in particular. Going through the car collection to see what I could buy, I found an '84 Toyota Supra. That's the car I learned how to drive stick in in real life. I had to have that car. And I had to buy Forza to do it. And I now own it.
So it's not a game in which there's an overarching plot. There are no power ups. There are no explosions. There are a hell of a lot of cars, some ridiculously powerful, some not. There are excellently constructed tracks. There's a lot of tweaks you can make with the cars. And with a few exceptions, the goal is merely to cross the finish line ahead of everyone else.