One of Europe’s busiest airports has moved closer to self-driving terminal shuttles with Amsterdam Schiphol’s deployment of 2 electric autonomous buses on the tarmac. The vehicles are being used to ferry cleaners and ground-handlers around the airport as part of an effort to “understand” how the technology works, according to Schiphol management, which will make a call next month on expanding their use. Nine of 10 workers said they were willing to take the driverless buses again, according to a statement by the airport, which suggested the tech provided a “safe and positive experience.” The bu…