On topic- I remember about a year ago that law enforcement was testing a device to stop fleeing cars and put an end to high speed chases. With one method, the fleeing car would be followed and a skateboard type antenna would be fired by explosive charge so as to go under the car. Tethered by a cable to the chase vehicle, a strong EMP would then be directed at the car which would disable the engine computer as well as the ignition system and other electronics.

Kill their 2000 watt sound system and they will be dead in the water. [Linked Image]

-Hal