Cube mapping

Hi, I use cube mapping to make cars in my game shiny, it works great when the player is outside the car and moving around. The problem is when inside the car the camera is following behind so it looks like the car is stationary even though it is moving. My question is, is it possible to move the (X,Y) position of a cubemap in real-time to simulate the vehicle moving? or even better is there a real-time reflection script floating around?

My game example: http://anthonystaines.com/gta/shsvid.mp4

Thanks

I will give you a fx file ,it works fine.

OK thanks, I would really appreciate that