Self-Defeating Fan Car

On your marks, get set, stay put! Have you ever that get up and not-go feeling? Well this car feels it, too. With a fan in the front and a sail in the back, you'd think it would be the perfect self-contained contraption. After all, it's a sail car that can make it's own wind, right? It wants to go everywhere, but ends up going nowhere.
The self-defeating fan car is one of my favorite contraptions, and it has a secret to escape from its stillness. This project is a great puzzle, a way to chat about Newtonian laws and forces, and of course, to be just downright silly.

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