Gadgets & Gizmos: A robotic cake, Spielberg's Duel becomes a reality & tattoing tardigrades

Steve Caplin wonders why scientists have developed a cake with pneumatic robotic dancing bears on top, rechargeable but also edible. Amazon have a new budget service – Haul. DVD anti-piracy warnings were piratical themselves. Spielberg's film Duel is about to become a reality in Texas. Delivery robots will soon be able to climb stairs. EEGs are to be considerably less intrusive. Agatha Christie is now helping budding detective writers – from beyond the grave. And Chinese scientists have worked out how to tattoo tardigrades. Learn more about your ad choices. Visit podcastchoices.com/adchoices