Sometimes a suitcase gets lost at the airport when you go on holiday. We have discovered where the suitcases go: if they remain at the airport for too long, they go in the dust cart. Anyway, so it seems. According to airport authorities in Christchurch, however, it was a new type of “dummy luggage” to test the system. These suitcases, mostly filled with old books and newspaper, were thrown away after they had demonstrated its value.