How would you like your pizza to be delivered to you in a self-driving car? In the next few weeks the idea is going to be tested on some of Domino's customers in the US city of Ann Arbor in Michigan. The aim is not to test if self-driving cars work, but to see if customers are happy to go out of their homes to collect the pizza from an empty car. The research is being carried out with Ford, which plans to start making self-driving vehicles in 2021. Russell Weiner, the president of Domino's USA, which is based just outside Ann Arbor, said the firm wanted to ensure the delivery of its pizzas this way would be "clear and simple" for customers.