Looks like the future is already here:
http://betabeat.com/2013/06/game-of-...hicle-problem/
At least in the Big Apple.
Key quote:
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"But even nonmilitary drones can pose a threat, the city would soon learn. Last March, an Alitalia pilot claimed to have seen a three-foot-wide drone buzzing within 200 feet of his Boeing 777 while on approach to JFK Airport. At the time, the FBI reported that the unidentified device had been flying 1,750 feet over a densely populated neighborhood and could have caused a calamitous midair collision. The operator was never located."
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Imagine a plane load of people dying because of some assholes toy.