Editor’s note: Wired.com contributor Jeremy Hart is making a 60-day, 15,000-mile drive around the world with a few mates in a pair of Ford Fiestas. He’s filing

U.S. troops first started driving Humvees in the 1980s. At the rate things are going, they may keep on driving ‘em forever. In recent days, the Commandant of the Marine Corps and Army officials have complained that the Hummer successors are too heavy and too expensive.