===================================================================
--- original.js
+++ change.js
@@ -1,11 +1,15 @@
 /**** 
 * Classes
 ****/ 
 //<Assets used in the game will automatically appear here>
-// Car class representing each player's car
-var Car = Container.expand(function () {
+// Define a basic OVAL class to fix the ReferenceError
+var OVAL = Container.expand(function () {
 	var self = Container.call(this);
+});
+// Car class representing each player's car
+var Car = OVAL.expand(function () {
+	var self = OVAL.call(this);
 	var carGraphics = self.attachAsset('car', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});