From flying taxis to robotic pets, the 2020 Consumer Electronics Show has displayed more concepts and prototypes than ever before. Of all the hundreds of thousands of products on show for tech enthusiasts in Las Vegas, here are some of the highlights from the latest CES extravaganza. Uber's dream of mass-market flying taxis has taken another small step towards becoming reality. The South Korean auto-firm Hyundai unveiled its S-A1 concept, an electric-powered aircraft with four rotors to lift its vertical takeoffs and landings, four to drive it up to 180mph in the air and a parachute for emergencies. Hyundai said it will carry four people and their luggage a distance of up to 60 miles and at altitudes up to 2,000ft. Although the initial expectation is for a pilot to fly it, Hyundai ultimately expects it to operate autonomously.