Car go wroom (bilen hopper mindre på jorden)

Assets/Scripts/car control v2.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class carcontrolv2 : MonoBehaviour
+{
+    public float motorTorque = 2000;
+    public float brakeTorque = 2000;
+    public float maxSpeed = 20;
+    public float steeringRange = 30;
+    public float steeringRangeAtMaxSpeed = 10;
+    public float centreOfGravityOffset = -1f;
+
+    WheelControl[] wheels;
+    Rigidbody rigidBody;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        rigidBody = GetComponent<Rigidbody>();
+
+        // Adjust center of mass vertically, to help prevent the car from rolling
+        rigidBody.centerOfMass += Vector3.up * centreOfGravityOffset;
+
+        // Find all child GameObjects that have the WheelControl script attached
+        wheels = GetComponentsInChildren<WheelControl>();
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+
+        float vInput = Input.GetAxis("Vertical");
+        float hInput = Input.GetAxis("Horizontal");
+
+        // Calculate current speed in relation to the forward direction of the car
+        // (this returns a negative number when traveling backwards)
+        float forwardSpeed = Vector3.Dot(transform.forward, rigidBody.velocity);
+
+
+        // Calculate how close the car is to top speed
+        // as a number from zero to one
+        float speedFactor = Mathf.InverseLerp(0, maxSpeed, forwardSpeed);
+
+        // Use that to calculate how much torque is available 
+        // (zero torque at top speed)
+        float currentMotorTorque = Mathf.Lerp(motorTorque, 0, speedFactor);
+
+        // …and to calculate how much to steer 
+        // (the car steers more gently at top speed)
+        float currentSteerRange = Mathf.Lerp(steeringRange, steeringRangeAtMaxSpeed, speedFactor);
+
+        // Check whether the user input is in the same direction 
+        // as the car's velocity
+        bool isAccelerating = Mathf.Sign(vInput) == Mathf.Sign(forwardSpeed);
+
+        foreach (var wheel in wheels)
+        {
+            // Apply steering to Wheel colliders that have "Steerable" enabled
+            if (wheel.steerable)
+            {
+                wheel.WheelCollider.steerAngle = hInput * currentSteerRange;
+            }
+            
+            if (isAccelerating)
+            {
+                // Apply torque to Wheel colliders that have "Motorized" enabled
+                if (wheel.motorized)
+                {
+                    wheel.WheelCollider.motorTorque = vInput * currentMotorTorque;
+                }
+                wheel.WheelCollider.brakeTorque = 0;
+            }
+            else
+            {
+                // If the user is trying to go in the opposite direction
+                // apply brakes to all wheels
+                wheel.WheelCollider.brakeTorque = Mathf.Abs(vInput) * brakeTorque;
+                wheel.WheelCollider.motorTorque = 0;
+            }
+        }
+    }
+}