Tomorrow is Today

DARPA Demos Amphibious Tank Prototype

Meet CAAT (for Captive Air Amphibious Transporter). The prototype vehicle is basically like a tank with treads made out of air-filled pontoons, enabling it to roll over water (and obstacles in the water) with Abrams-like efficiency and continue its forward march once it hits shore. Perhaps the coolest thing about the video below: this is a 1/5 scale demonstrator.