These suitcases were purposely put at Schihpol Airport, Amsterdam reminding passengers to consider their contents of their luggage before choosing between the red or the green lane. So they came up with putting crocodile tails coming out of suitcases with "something to declare" wrote on them. This is clever way of reminding people, funny yet purposeful. This along with other means of guerrilla advertising is can only contact a niche market which I must consider in my dissertation.