How do I make the Road move faster when I click with left mouse button?

I am making an 2D endless racing game in which the road is moving by default, but I want to make the road move faster when I click with leftmousebutton so It would seem like the car is boosted.

(offset is of the road texture which is on a Quad).

public class RoadMove : MonoBehaviour
{
    public float speed;
    Vector2 offset;

    void Update()
    {
        offset = new Vector2(0, Time.time * speed);
        GetComponent<Renderer>().material.mainTextureOffset = offset;
    }
}

Can someone help me with this ?

Thanks

Just use a different speed factor when you want to boost.

Like this:

 public class RoadMove : MonoBehaviour
 {
     public float speed;
     public float boostedSpeed;
     Vector2 offset;
 
     void Update()
     {
         if(Input.GetMouseButton(0)) //Mouse button 0 is left mouse button
             offset = new Vector2(0, Time.time * boostedSpeed);
         else
             offset = new Vector2(0, Time.time * speed);
         
         
         GetComponent<Renderer>().material.mainTextureOffset = offset;
     }
 }