Maglev means that the train doesn't actually touch the tracks but rather floats above them. The electrically charged magnets repel the train from the tracks to keep the train levitated, and the lack of friction between the train and the track enables the high speeds. By the year 2045, maglev trains are expected to make travel time between Tokyo and Osaka just one hour, about half the time it takes today.
Learn more about magnetic levitation, and how it might transform travel, with these videos.
To learn more about how magnets are helping shape the future, check out our series, Curiosity and Motorola Present: The Power of Magnets.