Congress adopted a nationwide 55 mph speed limit law during the oil embargo of the 1970s and threatened to withhold highway funding for any state that didn't comply. It repealed the law 13 years ago, when oil was cheap and gas plentiful. But with prices going through the roof and everyone worried about global warming, there are increasing calls for Congress to bring back the double-nickel speed limit.

Advocacy groups like drive55.org say rolling the speed limit back to 55 will save fuel, reduce pollution and save lives. It seems logical, but not everyone is convinced slower speeds bring any real benefit, and the debate is heating up.

"Sheer physics tell you lower speeds equal better fuel economy, fewer injuries and lower emissions," said Justin McNaull, director of state relations for AAA. "But what happens when you change the speed limit is a little less clear."

It depends upon who you want to believe. So before you read the article, what do you believe???

http://blog.wired.com/cars/2008/05/with-gas-prices.html

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