Well, for awhile anyways.
we are all replaceable by the army's newest creation apparently
http://www.youtube.com/watch?v=5pB8Hxo-k8A
"
They came up with the Griffon (PDF), an iRobot PackBot prototype strapped to a gasoline-powered, propeller-driven, radio-controlled, steerable parafoil system. The UGV hangs from a superstructure on which is mounted a 32cc Fuji engine behind an 18- by 8-inch propeller.
For the parafoil, the team considered a wide range of extreme sport kite surfing and traction wings but settled on the 11-meter Ozone Razor. This parafoil is attached by two hang points on the sides, with two arms to control the wing surface and a quick release to jettison the whole contraption on touchdown.The PackBot's on-board computer does the driving and controls the gas. Video, audio, and autonomous ground GPS navigation is also a standard PackBot feature.
The kit is designed to be man-packable and could be used by civilian teams for search-and-rescue in hazardous terrain in addition to military recon and strike missions in urban environments, according to the researchers.""