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Caterpillar Inc. and Navistar International Corp. said they will pursue business opportunities around the world together, as Caterpillar bowed out of the North American heavy-duty engine market last week.

Caterpillar Inc., which lost its dominant position in heavy-duty engines last year because of persistent problems with 2007-compliant models, said it will pull out of the North American Class 8 market by 2010, except for a severe-duty truck and engine in partnership with Navistar International Corp.

Initial jobless claims jumped 25,000 last week, the Labor Department said Thursday.

Volkswagen AG has gained antitrust approval from European regulators to buy a controlling stake in Swedish truck and bus maker Scania AB, Bloomberg reported Friday.

Rail and intermodal traffic fell for the week ended Saturday compared with the same week a year ago, the Association of American Railroads said.

Caterpillar Inc., which said Thursday it has signed an agreement to develop a heavy-duty truck with Navistar International Corp., said it would not develop and sell engines that meet 2010 emissions standards to other truck original equipment manufacturers.

Interstate 80 has reopened in Iowa, the Iowa Department of Transportation said.

IdleAire Technologies Corp., which designs anti-idling systems for long-haul trucks at truck stops, can proceed with a proposed sale without an investigation, a judge ruled, Bloomberg reported Monday.

WASHINGTON — Several prototype Class 8 hybrid trucks are currently under development, but the technical and economic obstacles in the way of placing reliable and fuel-efficient heavy hybrid over-the-road trucks in service remain daunting, experts told a House subcommittee.