In 1970 an American luggage executive unscrewed four castors from a wardrobe and fixed them to a suitcase. Then he put a strap on his contraption and trotted it gleefully around his house. Before the 1970s, the idea of rolling luggage was shunned by the travel industry, which viewed it as much less masculine than traditional luggage. Even some airlines discouraged them. There was a concern that wheels would get stuck in conveyor systems. Then there was the fear that 4 wheels suitcases could take