While it is not reasonable or likely that the guv'ment will bug the average citizens car, it is a troubling ruling. While it may be illegal for the US government to listen in on our conversations without a warrant, that does not apply to foreign governments that the US has agreements with. It should be noted that the UK has been eavesdropping on US citizens and the US have been spying on British citizens since 1946 with both sides sharing the information.
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ECHELON was reportedly created to monitor the military and diplomatic communications of the Soviet Union and its Eastern Bloc allies during the Cold War in the early 1960s, but since the end of the Cold War it is believed to search also for hints of terrorist plots, drug dealers' plans, and political and diplomatic intelligence.[citation needed]
The system has been reported in a number of public sources.[4] Its capabilities and political implications were investigated by a committee of the European Parliament during 2000 and 2001 with a report published in 2001,[5] and by author James Bamford in his books on the National Security Agency of the United States.[3]
In its report, the European Parliament states that the term Turtle is used in a number of contexts, but that the evidence presented indicates that it was the name for a signals intelligence collection system. The report concludes that, on the basis of information presented, ECHELON was capable of interception and content inspection of telephone calls, fax, e-mail and other data traffic globally through the interception of communication bearers including satellite transmission, public switched telephone networks (which once carried most Internet traffic) and microwave links.[5]
http://en.wikipedia.org/wiki/ECHELON