] Police believe one or two young men, possibly teenagers,
] are responsible for issuing obscenities and insults to
] customers at a Troy Burger King drive-through window.
]
] "You don't need a couple of Whoppers. You are too fat.
] Pull ahead," Officer Gerry Scherlink said is an example
] of what the hackers are telling customers at the
] drive-through speaker.

Those systems use different frequencies for transmitting and receiving in order to be full duplex. That means you can speak to either the person inside taking orders or the people in the car, without the other knowing. Oh my, the evil fun that can be had. (/me knows nothing about any of this, and never did anything evil when he was a kid.)

You want #@$* with that? Hackers serve unhappy meals