How to get a ai to drive to a raycast

I am making a script for a ai robot to go to a 'hit raycast'. The script for that is done, i just cant figure out the movement.

Yes i have looked at the character controller script and it dosnt make sence to me.

I want it to move like a tank, go forwards, backwards, turn left, turn right etc

I think its something along these lines.

 var bot : GameObject; //The robot that must follow the raycast
 var speed : float = 0.6; //Speed of the robot
 bot.transform.position, speed * Time.deltaTime =(Hit.point);

This is my script at the moment...

 var bot : GameObject; //The robot that must follow the raycast
 var Range : float; // Range of the raycast
 var mesh : GameObject; //Cammea the raycast comes from
 
 var Hit : RaycastHit; //Impact of the raycast the robot must follow
 
 var speed : float = 0.6; //Speed of the robot
 
 //References of how i learnt about raycasting
 //http://answers.unity3d.com/questions/15761/click-on-terrain-and-record-vector3-location-i-cli.html
 //http://www.youtube.com/watch?v=cZsG4dfCUec
 //http://www.youtube.com/watch?v=-F_w3RDRbN4
 
 function Update () {
 if(Input.GetMouseButtonUp(1))
 
 var Directionofline : Vector3 = mesh.transform.TransformDirection(Vector3.forward);
 
     Debug.DrawRay( mesh.transform.position, Directionofline * Range, Color.yellow); //Raycast in visual
            
         if(Physics.Raycast( mesh.transform.position, Directionofline, Hit, Range)){
         
                 if( Hit.collider.gameObject){
             
                 
             
                     bot.transform.position, speed * Time.deltaTime =(Hit.point); //The final result of the script
 
                     Debug.LogWarning("Potatoes!"); //Success the script works!
                     }
                     }
                     }