[LS]

This was on Discovery Channel's special on "Tanks" just before the war. This tank is about the size of an old Panzer IV. The prototype had a 37 mm. gun---obviously not a "tank" gun. But the issue wasn't so much firepower as armor, and the testing was stunning. They showed it taking full AT rounds and shedding them. This isn't "Chobam," either but a totally new plastic composite armor. VERY light.

[Brett66]

I found a link that describes it. Apparently it isn't quite as tough as the Abram's armor, but it is vastly lighter and can withstand considerable punishment. Sounds like a perfect armor for this new Stryker vehicle I keep hearing about.

Vickers unveils first plastic tank