Unity c# code for car controls.

gistfile1.txt

using UnityEngine;
using System.Collections;

public class CarControls : MonoBehaviour {
	public float rotationRange = 1.0f;
	public float minSpeed = 0.0f;
	public float maxSpeed = 20.0f;
	public float carSpeed = 10.0f;

	private float carRotation = 0.0f;

	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
		//Rotation
		float mousePos = UnityEngine.Input.mousePosition.x;
		mousePos /= Screen.width; //Get 0 to 1 unit space.
		mousePos -= 0.5f; //Center unit space.
		carRotation += mousePos * 2.0f * rotationRange; //Expand to rotational range.
		gameObject.transform.rotation = Quaternion.Euler(new Vector3(0.0f, carRotation, 0.0f)); //Rotate object.

		//carSpeed = minSpeed + (yPosition * (maxSpeed-minSpeed));

		gameObject.transform.position += gameObject.transform.forward * carSpeed * Time.deltaTime;
	}
}