If you’re in London before Thursday head to Trafalgar Square and check out Outrace, an installation that is the centrepiece of the London Design Festival. In front of the National Gallery you’ll find eight industrial Audi robots tracing messages in the sky using a powerful light source is positioned at the tool head of each robot.

If you fancy your chances of having a message played out by the robots head to Outrace. Long-exposure cameras capture the messages and relay them to the project website and social media platforms.