a little problem with angles

Unity Engine
1

i’m not sure if barycentric coordinates are what i’m looking for but i tried some code and it seems work somewhat.
in the road angle code, when i go up a hill and turn, the angle is not rotating correctly.
also when i apply going up a hill angle steep enough the angle of force is in the world coordinates.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class carController : MonoBehaviour {
    public float acceleration;
    public float rotationRate;

    public float turnRotationAngle;
    public float turnRotationSeekSpeed;

    private float rotationVelocity;
    private float groundAngleVelocity;
    private float ROTvel;
    private float rotvel2;
    void Update(){
    }
    // Update is called once per frame
    void FixedUpdate () {
        if (Physics.Raycast(transform.position, transform.up * -1, 5f))
        { 
          
            //Quaternion trot = Quaternion.FromToRotation(transform.up*-1, hit.barycentricCoordinate.normalized);

            //transform.rotation = Quaternion.SlerpUnclamped(gameObject.transform.rotation,trot,1*Time.deltaTime);


            Vector3 forwardForce = transform.forward * acceleration * Input.GetAxis("Vertical");
            forwardForce = forwardForce * Time.deltaTime * 1000;
            gameObject.GetComponent<Rigidbody>().AddForce(forwardForce);
        }
        else
        {gameObject.GetComponent<Rigidbody>().drag = 0;
        }

        Vector3 turnTorque = Vector3.up * rotationRate * Input.GetAxis("Horizontal");

        turnTorque = turnTorque * Time.deltaTime * gameObject.GetComponent<Rigidbody>().mass;
        gameObject.GetComponent<Rigidbody>().AddTorque(turnTorque);

        Vector3 newRotation = transform.eulerAngles;
        newRotation.z = Mathf.SmoothDampAngle(newRotation.z, Input.GetAxis("Horizontal")*-turnRotationAngle, ref rotationVelocity, turnRotationSeekSpeed);
        //gameObject.GetComponent<Rigidbody>().rotation.eulerAngles.Equals(newRotation);

        //rotate to road angle
        RaycastHit hit;
        Physics.Raycast(transform.position, transform.up * -1, out hit, 10f);

        ROTvel = gameObject.GetComponent<Rigidbody>().angularVelocity.y;
        rotvel2 = gameObject.GetComponent<Rigidbody>().angularVelocity.x;
        newRotation.x = Mathf.SmoothDampAngle(newRotation.x, hit.barycentricCoordinate.normalized.x, ref ROTvel, 0.01f);
        newRotation.y = Mathf.SmoothDampAngle(newRotation.y, hit.barycentricCoordinate.normalized.y, ref ROTvel, 0.01f);
        gameObject.GetComponent<Rigidbody>().rotation.eulerAngles.Equals(newRotation);
2

fixed it it was just the drag ratio.