MVC proxy pattern suggestions

I am trying to create an extension to an existing base MVC solution. In my extension, I need to overwrite a view that exists in the base solution. I can't think of an elegant way to do without duplicating most of the code.

My base solution's controller resembles something like this:

public CarController(IService1 service1, IService2 service2, IService3 service3)
    {
      _service1 = service1;
      _service2 = service2;
      _service3 = service3;
    }

public ActionResult Display()
{
  // some business logic here
  // build model here
  return View(model);
}

All I really want to do is update the HTML of the Display view in the extension solution's NewCarController. What is the best way to go about it?