Here is a great introduction to maglev technology and its potential widespread implementation in Japan. At the clip’s beginning, the narrator mistakenly states the Shinkansen is the fastest regularly scheduled train in the world, a title that belongs instead to the Shanghai maglev.
This Shanghai maglev clip lets viewers watch the speedometer climb rapidly to 430 km/hr and listen to the excited passengers.
This clip of the same train does an excellent job of shows the train's speed relative to traffic on a major highway.
This clip of the Japanese experimental maglev shows its interior at 500 km/hr and also the train coming out of one mountainous tunnel and right into another.