Navistar International Corp. announced plans to develop a new Class 8 linehaul truck, scheduled for introduction sometime in 2007 or 2008. Daniel Ustian, chairman, president and CEO of Navistar, said the new model will leverage the same high-performance vehicle technologies used in the company's bus, medium, severe-service and regional-haul Class 8 trucks. The OEM is backing the project with a capital investment of $150 million.