[Cooter]

Since 1986, AeroVironment Corporation (with the Defense Advanced Research Projects Agency) has been developing micro UAVs for use in military surveillance, law enforcement, and civilian rescue efforts. The Black Widow UAV, which has a six-inch wingspan and weighs only two ounces, is AeroVironment's award-winning MAV.

[anobjectivist]

I've seen video of that. Too bad it costs hundreds of thousands, if not millions of dollars. Actually, missing from that picture is the heat sink for the motor. I don't know of a plane that size that flys within the motors specified RPM range.