A self-driving car was a car which could drive without needing to be operated.
In 2003, during his stint as "The Inventor" on Destination, the Master had built self-driving air cars for the planet's Citizens. (AUDIO: The Destination Wars)
On 14 November 2065, after the chaos following the great solar storm of 2064, self-driving cars were granted citizenship rights. (PROSE: Time Traveller's Diary)