While on a Shinkansen I wanted to record exactly what it felt like. They ride so amazingly smooth. It feels just like what you are feeling right now, sitting in your chair and watching this video of the countryside float by. A car has more bump and vibration than a bullet train. 

There is a big controversy going on in Japan over building a new bullet train route from Tokyo to Nagoya. The desire is to build a Maglev train for even greater speeds. However since the French TGV reached its record speed there are a lot of people balking at the expense of building a new maglev train when it seems that older technology (steel wheels on rails) is not at the top of its capabilities.
To record this I simply set my camera on the ledge of the window and pressed the button. So smooth the camera never shakes or bounces.