Steve Caplin is intrigued by a ring for your index finger which will capture audio to take notes or set up timers or reminders. Dutch students have invented a modular electric car which has parts you can swap out yourself, including the battery, motors and even body panels. Wacky inventor Colin Furze has come up with a bicycle that has magnetic suspension. There’s a personal AI chef, an AI monitor for your cat’s litter tray, a way of harvesting lithium from dead rechargeable batteries, an expensive portable sauna you can take camping with you and, in Hangzhou in China, they have wheeled out a robot traffic policeman.

Guests: Steve Caplin

Published: Thu 18 December 2025