They have four wheels, they're green and have artificial intelligence – but no driver.

In a great example of how the Astra programme is shaping the Royal Air Force of tomorrow, RAF Brize Norton has been trialling the use of self-driving autonomous vehicles or 'robot cars'.

Find out how they coped with delivering spares and supplies across the RAF's largest station.

InsideAIR is produced for the Royal Air Force by RAF Media Reserves. Theme music by RAF Music Services.