Merge JSON array into Object : If I have an Object like. 

        myObj = {
        "name":"John",
        "age":30
     }

and an array like this.

     myObjArr = [
        { "name":"Ford", "models":[ "Fiesta", "Focus", "Mustang" ] },
        { "name":"BMW", "models":[ "320", "X3", "X5" ] },
        { "name":"Fiat", "models":[ "500", "Panda" ] }
    ]

How can I merge my array into the object so the output is like

    myObj = {
        "name":"John",
        "age":30,
        "cars": [
            { "name":"Ford", "models":[ "Fiesta", "Focus", "Mustang" ] },
            { "name":"BMW", "models":[ "320", "X3", "X5" ] },
            { "name":"Fiat", "models":[ "500", "Panda" ] }
        ]
     }

Sorry if this is a redundant question, but for some reason I just get lost with arrays. I have tried push which did not work and cannot find any good example on how to do this.