Crablike robots with magnetic feet can inspect crumbling bridges and scale towering steel walls so that you don't have to
Bridge Inspection Robot Equipping Magnets(BIREM) were invented by Yogo Takada at Osaka City University in Japan
They can move as fast at 7.8 inches per second and use magnets to grip onto bridges or steel structures
They are not available yet but should be available in Japan in three years