Update JSON object in a ajax callback

Question

I initialize my JSON object like this:

var car = {"model":"honda","make":""}

I have an ajax call to update the make:

function updateCarModel(id) {

$.ajax({
    url: '/Car/UpdateModel',
    async: true,
    type: "POST",
    dataType: "json",
    contentType: "application/json",
    data: JSON.stringify( id: id)

    success: function (data) {

                var localClientStorage = window.localStorage;

                var carObject = localClientStorage.getItem("car");

                carObject = JSON.parse(carObject );

                carObject.model = data.Car.Model;


                localClientStorage.setItem("car", JSON.stringify(carObject));
        } 
});
};

When I inspect the carObject in the chrome console, it shows the original object, not the updated one with the model. I did check to see if data.Car.Model has a value of civic and it does.