On 1 April, the same day California’s new $20 hourly minimum wage for fast-food workers went into effect, a new restaurant opened in north-east Los Angeles that was conspicuously light on human staff.CaliExpress by Flippy claims to be the world’s first fully autonomous restaurant, using a system of AI-powered robots to churn out fast-food burgers and fries. A small number of humans are still required to push the buttons on the machines and assemble the burgers and toppings, but the companies inv...