According to Wired's Danger Room blog the US Army has issued a contract to Albuquerque, New Mexico contractor Adherent Technologies for the development of a "foam-based vehicle arresting system," which is intended to stop a vehicle in it's tracks before it puts soldiers or civilians in harms way. According to the blog "In theory, the foam would "instantly disable" the oncoming vehicle by clogging up the engine intakes and blocking the steering mechanism. The foam would absorb the vehicle's kinetic energy, bringing it to a stop. "Lastly," the company says, it "will leave the driver trapped inside an encapsulated vehicle, with no means of orientation."" This sounds like one of those attempts to stop the Road Runner by Wille E. Coyote. Meep meep!