Functional Inheritance

gistfile1.js

var autoMobile = function(config) { 
  var that = {};
  that.getName = function() { 
    return config.name;
  };
  that.getNumberOfWheels = function() { 
    return config.wheels;
  };
  return that;
}

var car = function(config) { 
  var that = autoMobile(config); // No need for new keyword!
  that.getName = function() { 
    return 'Car: ' + config.name;
  }
  return that;
}

var miniCooper = car({name : "Mini Cooper", wheels: 4});
console.log(miniCooper.getName());
console.log(miniCooper.getNumberOfWheels());