World's First Commerical Maglev Nearing Launch

"Shanghai, China's largest city, is gearing up to launch the world's first commercial maglev train, which uses electromagnetic levitation to carry passengers as speeds of up to 430 kmh...Its supporters claim that maglev technology offers many advantages over traditional high-speed railways: less maintenance, vibration and noise, greater energy efficiency and no exhaust emissions...Critics, however, claim that maglev is too expensive to build. They also say there's no proof the technology can support a commercially viable transportation system."