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Despite fuel prices zooming toward the outer edge of our galaxy, ours is a nation of crowded highways and busy people who don’t like trucks getting in their way.

Thousands of used trailers are sitting unsold and gathering dust, as freight demand remains tepid and carriers that would typically up-grade their fleets are postponing purchases, spending their money on fuel instead, according to industry experts.

The average retail price of diesel jumped 8.2 cents to $4.727 a gallon last week, more than wiping out the entire 7.8-cent drop in the price of trucking’s main fuel over the previous five weeks, the Department of Energy reported July 7.

American Trucking Associations asked Congress to implement a comprehensive plan to address the soaring price of diesel fuel and ensures an affordable fuel supply for the nation’s 3.5 million truck drivers.

The Bush administration rejected regulating greenhouse gases, saying it would cripple the U.S. economy, and effectively moved the issue to a future administration, the Associated Press reported Friday.

Cargo ships would have to reduce their emissions under federal legislation approved by Congress, which President Bush is expected to sign into law, the Ventura County (Calif.) Star newspaper reported Wednesday.

Leaders of the Group of Eight nations endorsed cutting global emissions of greenhouse gases in half by 2050, but stopped short of more short-term targets, the Associated Press reported Tuesday.