A segment from Popular Science's The Future Of Security aired on The
Science Channel. Device manufactured by Eureka Aerospace Corporation. Posted on YouTube on January 13, 2010.
Popular Science: Eureka Aerospace's system consists of a suitcase-sized antenna that weighs roughly 50-55lbs, and can supposedly stop cars in their tracks up to 656 feet (200 m) away.
The first segment from the same broadcast covered through-the-wall imaging -- another of Eureka's projects. See it here:
A related story covered by Fox 11 News (LA):