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Retail sales jumped 1% in May, the Commerce Department said Thursday.

Roadrunner Transportation Services, formerly known as Roadrunner Dawes Freight Systems, said Monday it has rebranded to reflect new offerings its third-party transportation logistics, supply-chain management, and truckload and less-than-truckload services.

Automobile hauler Performance Transportation Services said it has gone out of business, due to a strike against the company last week by the Teamsters union.

The U.S. diesel average inched downward for the second consecutive week, dipping 1.5 cents to $4.692 a gallon, while gasoline topped the $4 mark for the first time ever, the Department of Energy reported.

BELSPRING, Va. — Inside Norfolk Southern Railway’s Cowan Tunnel at the foot of Virginia’s Blue Ridge Mountains, the latest intermodal ad-vancement is moving forward — 4 feet at a time.

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.

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.

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.