using System;
using UnityEngine;
using System.Collections;

public class carmove2 : MonoBehaviour {
	public bool go;
	private float posz; 
	
	// Use this for initialization
	void Start () { 
		go = false;
	}

	// Update is called once per frame
	void Update () {
		posz = transform.position.z;
		
		if (!go && posz >= 93.4f && posz <= 93.6f) {
			// Что здесь?
		} else {
			transform.Translate(0, 0, 0.2f);
		};
		
		if (posz >= 130) {
		   Destroy(gameObject);
		}
	}
}

using UnityEngine;
using System.Collections;

public class lightmanager1 : MonoBehaviour {
	private bool pressed;
	
	// Use this for initialization
	void Start () {
	
	}

	// Update is called once per frame
	void Update() {
		foreach (Touch touch in Input.touches) {
			if (touch.phase != TouchPhase.Ended && touch.phase != TouchPhase.Canceled) {
				pressed = !pressed;
				break;
			}
		}
		// Может так?
		this.GetComponent<carmove2>().go = pressed;
	}
}

public class lightmanager2 : MonoBehaviour {
	private bool pressed;
	private carmove2 scr1;
	
	// Use this for initialization
	void Start () {
	   scr1 = new carmove2();
	}

	// Update is called once per frame
	void Update() {
		foreach (Touch touch in Input.touches) {
			if (touch.phase != TouchPhase.Ended && touch.phase != TouchPhase.Canceled) {
				pressed = !pressed;
				break;
			}
		}
		// Или может так?
		scr1.go = pressed;
	}
}