The Car Stopper is a device that will enable the USAF to disable a vehicle's electronic devices, rendering the vehicle immobile in under one second. But while the military may be on the lookout for microwave tech that can disable vehicles of all shapes and sizes, a company called Eureka Aerospace already has such a device in development, and it can reportedly stop a vehicle dead in its tracks from up to 200 meters away. The device, called High Powered Electro Magnetic System, can stop vehicles made after the mid-1970s cold.