This is really cool idea guys, I don't think I've seen energy produced by a skateboard before! It's important to think up new ways to create sustainable energy, and with your invention, whilst you are having fun on your skateboard you could forget you're even doing it! The skateboard would let you get active and moving and do some good for the planet at the same time. You have also outlined everything so neatly in your drawing, the close-up of the motor particularly is really effective. Nice work guys, keep it up!