also, the article talks about faulty satellite radios, but it also can be done via the mini FM transmitters.(I think some people have satellite radios with a built in way to broadcast on an FM frequency while others buy these mini-FM transmitters to do this--only it reacher more than just THEIR car! Sirius is probably upset, but people probably only hear "Howard" for a minute before the sat-radio-equipped car changes lanes and moves away.
oops, URL on article may have been changed...
http://www.radioandrecords.com/Newsroom/2006_05_01/reportfcc.asp