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34World Cup car flags have us burning a lot of extra gas

Summer is finally here, and that means sports season is in full bloom. Whether you've caught World Cup fever this year or are just supporting your local baseball team, there's a lot to get excited about. However, if you've got one or more of those little pennants or flags attached to your car fluttering in the wind, your fan enthusiasm might be costing the world more than you might think.

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