I was thinkin to myself and i figure if you get some pop cans and cut them into the right shapes, you could make a turbo for a little go cart engine. The bottoms of cans could make a good housing and cut some fan blades kinda like on the movie twister where they make little propellers for those sensors. and if you solder it all together right, you could make a little turbo. I was just thinkin about it and thought i'd share. i wanna try it out and see if i could make on that made any pressure.