What happens when you tilt the 4x4 X-treme Off-roader to one side, and then to the other? We went home and tested it out with this home-built obstacle course. Pretty cool, right? Remember you can do the same at home. Just grab every item you can find, and build your own race track or obstacle course to put your 4x4 X-treme Off-roader to the test. Trust us – it loves to be tested!