title: Unity physics how to get the force vector that is working on an object
body: <p>I am moving a vehicle in Unity C# using addForce. the forward motion is created by an engine component and the steering motion is created by a steering component.
  The object moves in the proper direction but I am having problems making it face the direction of travel.
  Transform.LookAt wants the direcion to look.
  Is there any way to retrieve the resulting force vector that the physics engine calculated other than calculating it myself as well?</p>