Meet MAKRO, the world's first untethered robotic sewage pipe inspector. Developed by researchers at the Fraunhofer Institute for Autonomous Intelligent Systems in St. Augustin, Germany, MAKRO's segmented, wormlike design gives it unprecedented mobility, allowing it to maneuver around sharp bends and climb over soggy refuse, tree roots, even stairs, says designer Hermann Streich. Existing sewerbots are leashed to power supply cables and can only move forward. The 2-meter-long, waterproof MAKRO, on the other hand, is completely wireless and two-headed so it can navigate in reverse; it's also equipped with sensors, cameras, and a 166MHz Pentium II main processor that help it prowl in the dark and videotape pipe defects. A prototype will make a test run in some of Germany's 360,000 kilometers of public sewage pipes this summer.