function createCar(make, model, year) {
    var o = new Object();

    o.make   = make;
    o.model  = model;
    o.year   = year;
    o.sayCar = function() {
        alert('I have a ' + this.year + ' ' + this.make + ' ' + this.model + '.');
    };

    o.renderCarMenu = function() {
        //...set up some parameters here...
        carMenu = new wheelNav(passed paramenters);
        return carMenu;
    }

    return o;
}