08/02/2011 10:20 am ET Updated Oct 01, 2011

18.4 Cents and Going South

The U.S. federal gas tax is 18.4 cents a gallon. Why 18.4? Because the Senate didn't have the support for 18.5 cents when it voted on it in 1993.

Sad fact: 18.4 cents is pathetically low and means driving is subsidized to the tune of several bucks a gallon. Forget pollution, just the socialized cost of accidents adds up to about $2 to 3 per gallon.

Funny fact: The gas tax is set to drop to 4.3 cents on September 30th unless Congress acts.

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