Micro Pinwheel Racers

Have you ever wanted to harness the power of the wind?, No? Well you will now with these racers. Simply make a hole using tinkercad and put in a pinwheel and watch it go.
What makes it even better is that it is completely open for customization, you can make it anything you want. Want to throw a flux capacitor in there? go right ahead if you are brave enough. You can even go crazy and add two pinwheels to it.
Warning!: Adding two pinwheels can cause the racer to warp into hyper drive. Attem