US airlines don't want to fly a plane unless it is at 85% capacity. Fuel costs are crushing the airlines.

Just imagine a world in which, almost overnight, the transport system breaks down. Flights across the world are cancelled, leaving thousands of travellers stranded far from home.

Airports are crowded with mobs of angry, frightened people. Even greater throngs descend on the railway stations, desperate to squeeze on to the horribly overcrowded trains.

Meanwhile, the roads fall eerily silent, as rocketing petrol prices make it prohibitively expensive for all but the richest to drive long distances.

For businesses across the Western world — hotels and restaurants, cafes and newsagents, garages and tour operators — this would be nothing short of a disaster.
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