Stanley LaBounty designed its remote-controlled robot for a single purpose: to destroy everything in its path. The F16 cuts metal pipes, tears down stairwells, and hammers through concrete floors. Its 16.4-foot telescopic arm can rotate 360 degrees and operate grapples, shears, a giant drop hammer, and more than 120 different tools, including a chipping hammer and a diamond chainsaw, all powered by a hydraulic circuit. A 25-horsepower electric motor drives the robot, which rolls on tank-like treads. Once the F16 is positioned on the job site, four automatic footpads continuously adjust their positions to keep the 3,417-pound beast (which is still less than 20 percent the weight of any comparable machine) stable. $135,000