Gizmo.com has an article that says that Yamaha's RMAX is the worlds most advanced commercial UAV. Rmax has been around a while since around 1983 where it was used for agricultural purposes such as crop dusting and spot checking. Now-a- days it just keeps going to more and more military air shows so it seems to be wanting to be a military craft. The Rmax can take pictures with an onboard camera, do surveilance and even c rop dust with it's 20kg payload and 12hp engine (my lawnmower only has a 3hp engine!). With the RMAX's advanced flight hover control they say that almost anyone can fly the device. With its accurate GPS system the Rmax can fly to the same spot day after day and take time lapse pictures of a crop growing! The price tag can be anywhere from $86k to only $1 mill US based on available options. So now Yamaha is knows for its motorcycles, its keyboards and not for its most advanced commercial UAVs.