TV AND WEB RESTRICTIONS~**TV TOKYO - NO ACCESS JAPAN/CLEARED FOR INTERNET USE, EXCEPT BY JAPANESE WEBSITES / BBC WORLD, CNNI, NBC, CNBC MUST ON-SCREEN COURTESY 'TV TOKYO' IF PICTURES TO BE SHOWN ON CABLE, COMMUNICATIONS SATELLITE IN JAPAN.<br/> <br />This is the first test of Japan's experimental magnetic levitation train in two years.<br/> <br />The test track's been doubled in length to nearly 43 kilometres.<br/> <br />Its developers say the design's also been upgraded for better aerodynamics and cabin space.<br/> <br />The train, which floats above the track on magnets, is intended to travel at up to 581 kilometres an hour.<br/> <br />Japan's transport minister was among the guests at a ceremony marking the start of the latest tests on Thursday.<br/> <br />(SOUNDBITE) (Japanese) JAPANESE TRANSPORT MINISTER AKIHIRO OTA SAYING:<br/> <br />"This train reminds us of how proud we are as a technology powerhouse and gives us great hopes for the future."<br/> <br />The train's due to go into service in 2027 at a cost of more than
