Studio Diip made a car for a goldfish. When the fish goes on an outing, it is transferred to a separate tank that is mounted on wheels. An overhead camera observes the fish's movements, and when it swims towards one of the tank's edges, the car drives in that direction. In this way, the fish can drive its tank-car all over the house and really have a good old explore.
Goldfish drives a car
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.