If you haven't been to Disney in a while, you may not know that they've changed TestTrack somewhat. You now design your own car before riding. It then evaluates your car to see how well it would perform. I worked with my daughter to design a mini car with solar power and a turbo charged engine. We decided it needed to be sparkly and green. It was a blast and scored a 198 at the end. Once you leave the ride, you can make a "commercial" for your car and even email it to yourself. Me (being me) did just that. Here's the end result of our work.