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The Oak Brook based company is asking patrons to find the cup, and win free coffee.
McDonald's launched a city-wide scavenger hunt this morning morning. Other cities around the country will participate, too. All told it's the first-ever nationwide scavenger hunt.
Beginning at 7 a.m., McDonald's participants will look for one of three hidden giant McCafe coffee cups somewhere in the city. The company plans to hide another cup at noon and a third cup at 5 p.m.
The first person to locate a cup will be greeted by a McCafe Prize Official and win a year's worth of free McCafe beverages.