Some professional scrapers stage blitzkrieg raids, mounting around a dozen simultaneous attacks on a website to grab as much data as quickly as possible without being detected or crashing the site they're targeting.
Three 10-meter-long 1997 Terex TS14D motor scrapers -- machines that chew up roads for repaving -- roar past a crowd of 1, 200 in baseball caps and blue jeans at a recent Ritchie Bros. auction in Clinton, Wisconsin.