Navistar International (NYSE: NAV) makes commercial trucks and diesel engines. The company's largest customer is Ford, which buys PDQ for its XYZ, accounted for 9% of total revenues in 2009, a significant amount for a single customer. As a result of its focus on trucks, NAV grew rapidly when trucks became popular consumer vehicles, but has been hit hard by the increase in gasoline prices from.
Navistar also has a healthy business building military vehicles. Since 2006, the company has secured over $5 billion in government orders for military trucks and vehicles. Examples of contracts won is a $752 million contract to improve the Mine Resistant Ambush Protected (MRAP) vehicle.(Read more at Wikinvest )