Will driverless cars mean computer crashes?

Google co-founder Sergey Brin believes that "self-driving cars will be far safer than human-driven cars" but who trusts them enough to drive in them or even alongside them?

Drivers will not need a driving licence by 2040.

At least that is what the Institute of Electrical and Electronics Engineers believes. It thinks autonomous cars capable of driving to any destination are set to become the norm.

With an estimated 90% of current car accidents thought to be caused by human error, taking people out of the equation is seen by many car companies as a massive boost to safety.

But most qualified drivers do not seem to think they would be the ones in trouble.

"Most drivers think they are better than average drivers," says psychologist Dr Graham Hole, of the University of Sussex, who has published work on the psychology of driving.

"People typically have a very inflated view of their own abilities as far as driving is concerned."

A large number of companies are investing in autonomous driving technology.

General Motors, Volkswagen, Google, Volvo, BMW, Audi, Mercedes and many more are all in vehicle autonomy trial stages to a level not seen before.

But who is a better driver - man or machine?

And if there is a clear winner, how are drivers - or technical experts - convinced of the findings?