Can anyone tell me the differences between the two codes below:

```js
var Person = {
  Cars: [],
  init: function(){ 
    this.Cars = [];
  } 
};
```

and 

```js
var Person = {
      Cars: [],
      init: function(){ 
        Person.Cars = [];
      } 
    };
```

One is using "this" and the other using "Person".

Thanks