Glenn Farley over at KING 5 News has an interesting video that shows how Boeing plans to use robots to automatically paint the wings of the Boeing 777 aircraft. The company believes that the robots will not only paint the wings 50% faster than human beings can, but will also do so while using less paint due to higher paint application accuracy. This also has the added bonus of saving weight on the wing, which translates to fuel savings (especially when multiplied by many flights across the fleet).
See the source link for the video.