Different classes always have a sing instance for a common property

Let's take the manufacturer/car model example. A model has a specific manufacturer. So let's say the models "Punto", "500", "Panda" have always the manufacturer "Fiat".

If the models are one class each and the manufacturer is a class instance what's the cleanest/best solution to get the models connected to a manufacturer without having multiple instances of the manufacturer class. Setting them via constructor is obvious because a model can never change from who it gets manufactured.

Let's show my problem in a simplified code sample:

class Manufacturer
{
    protected $name;

    public function __construct($name)
    {
        $this->name = $name;
    }
}

abstract class Car
{
    protected $manufacturer;

    public function __construct(Manufacturer $manufacturer)
    {
        $this->manufacturer = $manufacturer;
    }

    abstract public function getModel();

    public function getManufacturer()
    {
        return $this->manufacturer;
    }
}

class ModelA extends Car
{
    public function getModel()
    {
        return 'A';
    }
}

class ModelB extends Car
{
    public function getModel()
    {
        return 'B';
    }
}

// The manufacturer instance
$manufacturerC = new Manufacturer('C');

// Setting the manufacturer for the models is obvious
// because they always get manufactured from the manufacturer "C"
// and never from a manufacturer "X"
$modelA = new ModelA($manufacturerC);
$modelB = new ModelB($manufacturerC);