US Army tests balsa wood Humvee
From Army Times:
The Army said Tuesday it will begin testing a composite, nonmetal Humvee utility vehicle that is 900 pounds lighter than its conventional counterpart so it can carry extra armor to better protect soldiers against roadside bombs in Iraq and Afghanistan.
The prototype vehicle’s frame and body is made of nonmetal composites — a combination of fiberglass, balsa wood, foam and carbon reinforcements all held together with resin.
via The Moped Ronin
That is actually the prototype, here’s the actual combat-ready vehicle: http://riotclitshave.com/2008.08/podborochka-kartinok_11644_s__25.jpg