Oliver Peterson: Australian correspondent on the launch of Sydney's new driverless metro train line

Sydney's long-awaited driverless metro train line has been launched, with up to 200,000 commuters being expected to use the service.  The line runs from Chatswood in Sydney's north to Sydenham in the inner west via tunnels under Sydney Harbour. Australian correspondent Oliver Peterson says the project is expected to draw in more international visitors, offsetting the $20 billion spent on the project. LISTEN ABOVESee omnystudio.com/listener for privacy information.