how to use Javascript's localStorage.getItem()

Hi,

I'm wondering how I'm supposed to use the localStorage. I have this bit of code:

var car = {};
    car.wheels = 4;
    car.doors = 2;
    car.sound = 'vroom';
    car.name = 'Lightning McQueen';
    console.log( car );
    localStorage.setItem( 'car', car );
    console.log( localStorage.getItem( 'car.doors' ) );

    var oCars = localStorage.getItem( 'car' );
    $.each(oCars, function(key, value) {
        var sCurVal = oCars[key];
    });

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The console.log doesn't show anything. This:
console.log( car );

just shows [Object object]

This:
    console.log( localStorage.getItem( 'car.doors' ) );

comes out null

The .each doesn't step through.

What am I missing?

Thank you!