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Cummins Inc., the maker of more than one third of North America’s heavy-duty truck engines, plans to invest another $100 million in Brazil during the next four years to meet higher demand in that country, Bloomberg reported.

American Axle & Manufacturing Holdings will expand a factory in Michigan to build more parts for large commercial trucks, reducing its reliance on General Motors Corp. for business, Bloomberg reported Thursday.

Ryder System said Wednesday it completed its previously announced acquisition of Gordon Truck Leasing, based in Philadelphia.

Wright Express Corp. said it completed its acquisition of Financial Automation Limited, a New Zealand-based international provider of fuel card processing software systems.

Kenworth Truck Co. will make standard on its Class 5-8 trucks a synthetic axle lube that will boost fuel economy by 1%, the company said.

Truck components maker ArvinMeritor Inc. said it dedicated a new $30 million manufacturing facility in northern Mexico for trucks built in the United States and Canada.

Freightliner Trucks, part of Daimler Trucks North America, said it will offer Meritor WABCO’s new automatic forward-collision warning and braking system on its models Cascadia and Century Class S/T tractors.

Independent engine manufacturer Cummins Inc. continued increasing its market share in heavy-duty engines during the first half of 2008, while sales by competitor Caterpillar Inc. dwindled, WardsAuto.com reported.

Growth in the nation’s fleet of Class 8 trucks ground to a halt during the second quarter, as U.S. registrations for vehicles in operation rose by just 0.75%, according to R.L. Polk & Co.