I hope no one else has diaried this - my apologies if it is a repeat, but a Canadian Auto News journal ran the following recently:

REPORT: Stung by High Gas Prices, Uncle Sam Buys Minivans to Replace Army Humvees
Date Posted 05-23-2005

WINDSOR, Canada -- The U.S. Armed Forces have ordered 19,000 minivans and 5,000 Pacificas from the Chrysler Group for use as light-duty vehicles in Iraq and elsewhere around the world, displacing less fuel-efficient Humvees, according to the Windsor Star.

The switch to the gas-powered school-carpool mainstays is designed to reduce fuel consumption and improve passenger-carrying ability. The U.S. military has complained it is inefficient to use Humvees to carry a few soldiers at a time, especially in noncombat situations.
(see full article for more)

http://www.edmunds.com/insideline/do/Articles/articleId=105726

(more below the fold)