why do we need static methods in class of javascript.

```
class Car {
  constructor(brand) {
    this.carname = brand;
  }
  static hello(x) {
    return "Hello " + x.carname;
  }
}

mycar = new Car("Ford");

document.getElementById("demo").innerHTML = Car.hello(mycar);

```

I know that , Static methods are called directly on the class (Car from the example above) - without creating an instance/object (mycar) of the class.
But what's the use of/point of static method in classes JS.