Looking around in a moving vehicle

I have made a cart like a roller coaster car. I have animated it in matinee so it has a fixed path to travel that includes turns, and hills. I put my “First person Actor” in the cart, and use “Attach to Actor”, FPA to the Cart. My FPA rides in the cart and can look around, but doesnt turn as the cart does.
What I want is like you riding in the seat in the cart. if the cart makes a U-turn so do you, but you can still turn you head to look around.
Any help or suggestions would be appreciated.

Thanks,