Labor leader Mark McGowan said Mr Barnett could not be trusted to build a rail line to Perth Airport. He said the Liberal party's pledge would become a broken promise, like the Ellenbrook rail line promised at the previous election, describing the Premier's announcement as a "hoax." "The Liberal Party will simply break this promise because they have no credibility on public transport," Mr McGowan said. He said the Liberals' plan also involved unnecessary tunnelling. Mr McGowan made a further Metronet announcement on Sunday, pledging $590 million to buy 144 new rail cars and build a train depot over eight years. The new trains would have driver-supervised automatic train operation, leading brake technology, energy-efficient lighting, air conditioning and passenger information systems, he said. Labor would also ensure all new generation rail cars had security with CCTV cameras and free Wi-Fi, Mr McGowan said. "The trains bought for the new Perth Airport rail line will be configured to ensure ample luggage space for travellers," he said. Modern train technology means they will be more environmentally friendly, use less power, provide a smoother ride and have lower operating cost. However, Mr Buswell said Labor's entire rail plan was a fantasy that would never be delivered because it was under budgeted. "This obvious infrastructure announcement today to provide more rail cars for this fantasy is therefore immaterial," he said.