that is a nice camera follow code. but is too rigid, you can add some nice dampening by filtering the camare angle a litle.
somethihg like this:
Code:

---

var prevPan = 0;

function SetCamera()

{

   var tau;

   camera.x = p_vehicle.x - 350 * cos(p_vehicle.pan); 

   camera.y = p_vehicle.y - 350 * sin(p_vehicle.pan); 

   camera.z = p_vehicle.z + 100; 

   //camera.pan = p_vehicle.pan; 

   // apply a low pass filter to the camera angles

   // tau = 0.3; // play with this for different damping effects

   prevPan = prevPan * (1 - tau) + p_vehicle.pan * tau;

   camera.pan = prevPan;



   // to do: apply fi;terring to this angle too 

   camera.tilt = -10; 

}

---

this code will produce a nice lagging of the camara allowing you to see the relative movement of the vehicle chassis.

I hope it works because I did not tested.
(Please do not take it offesinvely, I just one to help you people )

Newton