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Penske Truck Leasing has ordered 750 Freightliner Cascadia trucks with selective catalytic reduction technology, making the manufacturer the majority supplier of 2010 tractors to Penske, Freightliner said.

A growing oil slick in the Gulf of Mexico well in the Gulf of Mexico could hamper production, shipping and refining of oil and natural gas in Mississippi, Alabama and Louisiana, Bloomberg reported Monday.

The California Air Resources Board has directed its staff to come up with specific proposals by September to provide additional flexibility to help truckers ease the financial pain of complying with the state’s new truck regulations.

U.S. manufacturing activity expanded in April at its fastest pace since June 2004, the Institute for Supply Management said Monday.

Sections of Interstates 24 and 40 remained closed around Nashville, Tenn., Monday morning as flooding left several feet of water on roadways, the Tennessean newspaper reported.

Consumer personal spending rose 0.6% in March, the biggest jump in six months, the Commerce Department said Monday.

KISSIMMEE, Fla. — Mack Trucks CEO Dennis Slagle said he is reinvigorating his company and willing to take on any rival, and he promptly picked fights with Navistar Inc. and Transportation Secretary Ray LaHood.

Review of the 2007 generation of diesel engines has been a very hot topic this year. At the annual American Trucking Associations Technology & Maintenance Council meeting, I was one of the panelists asked to score the performance of the 2007 engines based on TransAm’s experiences.

Thank you to our readers for the many favorable comments we’ve received in response to the special report on CSA 2010 that Transport Topics produced as part of the April 26 issue.